Program of the Sessions

Lubbock, Texas, April 8–10, 2005

3:30PM The Role of Coinfection in Multi-Disease Dynamics. Friday, April 8 (4) Preliminary report. Maia Martcheva Sergei Pilyugin Meeting Registration *and , University of Florida (1006-92-132)

NOON –4:30PM First Floor Lobby, Mathematics 4:00PM Allee effects in a host-parasitoid model. Preliminary and Statistics Building (5) report. Sophia R.-J. Jang, University of Louisiana at Lafayette (1006-92-178) AMS Exhibit and Book Sale

NOON –4:30PM Room 106, Mathematics and Statistics Building Special Session on Future Directions in Mathematical Systems and Control Theory, I Special Session on Extinction, Periodicity, and Chaos 2:00 PM –4:50PM Room 108, Mass in Population and Epidemic Models, I Communications Building 2:00 PM –4:20PM Room 110, Mass Organizers: David Gilliam, Texas Tech University Communications Building W. P. Dayawansa,TexasTech Organizers: LindaJ.S.Allen, Texas Tech University University Sophia Ruey-Jen Jang, University of 2:00PM Observability of Complex Systems. Preliminary Louisiana at Lafayette
(6) report. Lih-Ing W. Roeger,TexasTech Clyde F. Martin, Texas Tech University University (1006-93-34) 2:00PM Chaos and Habitat Size. Preliminary report. 2:30PM On Global Controllability of Planar Affine Nonlinear

(1) J. M. Cushing*, Department of Mathematics & (7) Systems. Interdisciplinary Programin Applied Mathematics, Yimin Sun, Academy of Mathematics and Systems University of Arizona, R.F.Costantino,Ecology& Science, Chinese Academy of Sciences, and Lei Evolutionary Biology, University of Arizona, Robert Guo*, Laboratory of Systems and Control, Academy A. Desharnais, Department of Biological Sciences, of Mathematics and Systems Science (1006-93-69) California State University Los Angeles, and 3:00PM On Agrachev’s curvature of optimal control. Shandelle M. Henson, Department of Mathematics, (8) Preliminary report. Andrews University (1006-92-145) Matthias Kawski, Arizona State University 2:30PM Coexistence in a Ricker Competition Model. (1006-93-66) (2) Preliminary report. 3:30PM Global Output Feedback Stabilization of Nonlinear Shandelle M. Henson*, Andrews University, J. M. (9) Systems: A Homogeneous Domination Approach. Cushing, University of Arizona, and Chantel C. Chunjiang Qian, University of Texas at San Antonio Blackburn, Andrews University (1006-92-174) (1006-93-28) 3:00PM Periodicity and Global Asimptotic Behavior of Some 4:00PM Asymptotic Input-Output Linearization via (3) Nonautonomous Discrete Population Models. (10) Observer. V. L. Kocic, Xavier University of Louisiana Feng Liu and Daizhan Cheng*, Institute of Systems (1006-39-134) Science, Chinese Academy of Sciences (1006-93-62)

The time limit for each contributed paper in the sessions is ten minutes. found in Volume 26, Issue 3of Abstracts of papers presented to the In the Special Sessions the time limit varies from session to session and American Mathematical Society, ordered according to the numbers in within sessions. To maintain the schedule, time limits will be strictly parentheses following the listings. The middle two digits, e.g., 897-20- enforced. 1136, refer to the Mathematical Reviews subject classification assigned For papers with more than one author, an asterisk follows the name of by the individual author. Groups of papers for each subject are listed the author who plans to present the paper at the meeting. chronologically in the Abstracts. The last one to four digits, e.g., 897-20- Papers flagged with a solid triangle (
) have been designated by the 1136, refer to the receipt number of the abstract; abstracts are further author as being of possible interest to undergraduate students. sorted by the receipt number within each classification. Abstracts of papers presented in the sessions at this meeting will be

Appendix–14 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Friday, April 8 – Program of the Sessions

4:30PM A Projective Metric of Linear Systems. Special Session on Topology of Continua, I (11) X Alex Wang, Department of Mathematics and Statistics, Texas Tech University (1006-93-49) 2:00 PM –4:50PM Room 110, Mathematics and Statistics Building Special Session on Statistical Image Processing and Organizer: Wayne Lewis, Texas Tech University Analysis and Applications, I 2:00PM A continuum X whose hyperspace of subocntinua is
2:00 PM –4:50PM Room 012, Mathematics (23) not its continuous image. and Statistics Building Alejandro Illanes, Universidad Nacional Autonoma de Mexico (1006-54-101) Organizer: Victor Patrangenaru,TexasTech 2:30PM Injectivity and Intrinsic Rotations. University (24) James T. Rogers, Jr., Tulane University 2:00PM Non-convex optimization in Image Analysis. (1006-54-64) (12) Sunanda D. Mitra, Texas Tech University 3:00PM Dendroids with only one bottleneck center. (1006-60-159) (25) Preliminary report. 2:30PM Encoding an arbitrary collection of image edges. Van C Nall*, University of Richmond, and Jo Heath,
(13) Gopal Lakhani, Texas Tech University, Department Auburn University (1006-54-68) of Computer Science (1006-94-223) 3:30PM On the n-fold hyperspace suspensions of continua. 3:00PM Analysis and Statistical Characterisation of (26) Sergio Macias, Institute of Mathematics, National (14) Windstorm Damage using Aerial Images. University of Mexico (1006-54-71) Lakshminarasimhan V Sampath, James Arn 4:00PM Properties of Buffers. Preliminary report. Womble*, Brian S Nutter and Kishor C Mehta, (27) Robbie Allen Beane, University of Missouri, Rolla Texas Tech University (1006-65-253) (1006-54-142) 3:30PM Using Markov Random Fields for Texture Based 4:30PM Quotients of Bing Spaces. Preliminary report.
(15) Radial Segmentation. (28) Nicholas S Ormes*, Richard N Ball and James N Eric Sinzinger, Texas Tech University Hagler, University of Denver (1006-54-239) (1006-62-236) 4:00PM On improving input estimators with potential (16) applications to Positron Emission Tomography. Special Session on Differential Geometry and Its Ali Khoujmane*, Frits Ruymgaart and Victor Applications, I Patrangenaru, Texas Tech University (1006-62-249) 2:00 PM –4:55PM Room 108, Mathematics and Statistics Building 4:30PM A Simplified Enhanced LBG Algorithm. Preliminary (17) report. Organizers: Josef F. Dorfmeister, Munich Jiangling Guo*andSunanda Mitra,Computer University of Technology Vision and Image Analysis Lab, Texas Tech Magdalena D. Toda University (1006-94-180) ,TexasTech University Special Session on Undergraduate and Graduate Hongyou Wu, Northern Illinois Student Research (and Related Poster Session University organized by Ali Khoujmane and Mara D. Neusel, 2:00PM Surface Geometry and Algebraically Completely Texas Tech), I (29) Integrable Systems. Preliminary report. Franz Pedit*, University of Massachusetts at Amherst, CBohle, TU-Berlin, KLeschke, University 2:00 PM –4:25PM Room 015, Mathematics of Massachusetts, Amherst, and U Pinkall, and Statistics Building TU-Berlin (1006-53-109) Organizers: Ali Khoujmane, Texas Tech University 3:00PM K-Surfaces (smooth and discrete) of non-finite type. Edward W. Swim,TexasTech (30) Preliminary report. University Ivan Charles Sterling, St Mary’s College of Edward J. Allen, Texas Tech University Maryland (1006-53-82) Padmanabhan Seshaiyer,TexasTech 3:30PM Transformations of affine spheres. University (31) Erxiao Wang, University of Texas at Austin (1006-53-152) 2:00PM Consistency and stability of a nonconforming finite (18) element method for fluid-structure interaction. 4:00PM Willmore tori with non-trivial normal bundle. Edward W Swim*andPadmanabhan Seshaiyer, (32) Katrin Leschke, University of Massachusetts, Texas Tech University (1006-65-235) Amherst (1006-53-212) 2:30PM Improving Regression Function Estimators. 4:30PM p-harmonic functions and the minimal surface (19) Ali Khoujmane, Texas Tech University (33) equation in a Riemannian manifold. (1006-62-12) Ye-Lin Ou, The Univerity of Oklahoma (1006-53-15) 3:00PM Polynomials that Arise in a Polya Urn Gambling
(20) Game. Special Session on Classical and Differential Galois Bret M Hanlon*andClyde F Martin,TexasTech Theory, I University (1006-00-76) 3:30PM Stochastic LPA Models Compared. 2:00 PM –4:45PM Room 114, Mathematics
(21) Kiyomi Kaskela, Texas Tech University and Statistics Building (1006-60-102) Organizers: Lourdes Juan, Texas Tech University 4:00PM Mathematical Model of Visual Motion-Detection in (22) Flies. Arne Ledet, Texas Tech University Baili Chen*andClyde F. Martin,TexasTech Andy R. Magid, University of University, Lubbock, TX 79401 (1006-34-144) Oklahoma

APRIL 2005 NOTICES OF THE AMS Appendix–15 Program of the Sessions – Lubbock, TX, Friday, April 8 (cont’d.)

2:00PM Iterated Picard–Vessiot extensions. Preliminary 3:00PM Discrete Complex Earthquakes. (34) report.
(46) Eric M. Murphy, Texas Tech University Andy RMagid , University of Oklahoma (1006-30-65) (1006-12-181) 3:30PM Holomorphic extensions and theta functions on 2:30PM Strongly normal extensions.
(47) complex tori. Preliminary report. (35) Jerald J. Kovacic, CCNY - The City College of the Roman J. Dwilewicz, University of Missouri City University of New York (1006-12-103) (1006-30-199) 3:00PM Non-integrability of some problems in Celestial 4:00PM Smale’s Mean Value Conjecture for Complex (36) Mechanics: a differential Galois approach. (48) Polynomials. Juan J. Morales-Ruiz, Universitat Polite´cnica de Jeremy T. Tyson, University of Illinois Catalunya, Barcelona, SPAIN (1006-70-169) (1006-30-237) 4:00PM Classification of linear q-difference equations and 4:30PM Growth properties of Painlev´e transcendents. (37) Galois theory. (49) Aimo Hinkkanen, University of Illinois at Jean-Pierre Ramis, Universite´ Paul Sabatier, Urbana-Champaign (1006-30-135) Toulouse, France and Institut Universitaire de France (1006-39-108) Special Session on Topology of Dynamical Systems, I

Special Session on Homological Algebra and Its 2:00 PM –4:50PM Room 109, Mathematics Applications, I and Statistics Building Organizer: Brian Raines, Baylor University 2:00 PM –4:50PM Room 112, Mathematics 2:00PM Coding Expansive Automorphisms of Compact and Statistics Building (50) Groups. Organizers: Alex Martsinkovsky, Northeastern Alex Clark*, University of North Texas, and RJ University Fokkink, TU Delft (1006-37-208) Mara D. Neusel, Texas Tech University 2:30PM On equations of compound and simple limit cycles. (51) Anatoly B. Korchagin, Texas Tech University 2:00PM Auslander’s and Bass invariants related to some (1006-37-183) (38) homological conjectures. Anne-Marie Simon, Universit´e libre de Bruxelles 3:00PM Topologizing sets so that a given self map is (1006-13-219) (52) continuous. Preliminary report. C Good, University of Birmingham, UK 2:30PM Stable cohomology for local rings. Preliminary (1006-54-215) (39) report. Oana Veliche*, University of Utah, Salt Lake City, 3:30PM Controlled Hahn-Mazurkiewicz Theorem and some UT, and Luchezar L. Avramov, University of (53) new dimension functions of Peano continua. Nebraska, Lincoln (1006-13-243) Taras Banakh, Nipissing University and Ivan Franko National U. of L’viv, Ukraine, and Murat Tuncali*, 3:00PM Gaps in Hochschild (co)homology imply smoothness Nipissing University (1006-54-126) (40) for commutative algebras. Luchezar Avramov and Srikanth Iyengar*, 4:00PM Inverse Limits of Upper Semi-continuous Set Valued University of Nebraska (1006-13-162) (54) Functions. W. T. Ingram, Spring Branch, Texas, and William S. 3:30PM The Regularity Condition R of Serre for Affine  Mahavier*, Emory University (1006-54-110) (41) Semigroup Rings. Preliminary report. Marie A. Vitulli, University of Oregon (1006-13-78) 4:30PM Two-pass Maps and Indecomposability of Inverse (55) Limits of Graphs. 4:00PM Cluster Categories. W. T. Ingram, University of Missouri - Rolla (42) Gordana Todorov, Northeastern University (1006-54-67) (1006-16-241) 4:30PM On the Auslander-Buchsbaum - type formulas. (43) Alex Martsinkovsky, Northeastern University Special Session on Theory and Application of (1006-13-206) Stochastic Differential Equations, I

2:00 PM –4:50PM Room 121, Mass Special Session on Recent Advances in Complex Communications Building Function Theory, I Organizers: Edward J. Allen, Texas Tech University 2:00 PM –4:50PM Room 011, Mathematics Armando Arciniega, University of and Statistics Building Texas at San Antonio 2:00PM Stability and convergence of large-scale stochastic Organizers: Brock Williams, Texas Tech University (56) hereditary systems under markovian structural Roger W. Barnard,TexasTech perturbations. Preliminary report. University Gangaram S. Ladde, The University of Texas at Kent Pearce, Texas Tech University Arlington (1006-93-48) 2:00PM Conformal field theory and the universal 2:30PM Stochastic Partial Differential Equations and (44) Teichmueller space. (57) Finite-Time stability. Preliminary report. David Radnell, Max Planck Institute for S Sathananthan*, Tennessee State University, and Mathematics, and Eric Schippers*, Dept. of MAnabtawi, American University of Sharjah Mathematics, University of Manitoba (1006-30-220) (1006-60-35) 2:30PM Experiments in discrete conformal welding. 3:00PM Stochastic perturbation of dispersion-managed (45) Preliminary report. (58) optical solitons. Ken Stephenson, University of Tennessee Anjan Biswas, Tennessee State University (1006-30-182) (1006-78-39)

Appendix–16 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Saturday, April 9 – Program of the Sessions

3:30PM Measures Generated by Stochastic Differential Special Session on Partial Differential Equation and (59) Equations in Banach Space. Its Application in Biomedical Study, I Fariborz Asadian, Fort Valley State University (1006-60-85) 3:00 PM –4:20PM Room 109, Mass 4:00PM Some Results about 2D Euler equation perturbed by Communications Building (60) noise. Organizers: Jay R. Walton, Texas A&M University Hakima Bessaih, University of Wyoming (1006-60-98) Padmanabhan Seshaiyer,TexasTech University 4:30PM A new analysis of the effects of the Asian Crisis of
(61) 1997 on Emergent markets. Akif Ibragimov, Texas Tech University Y. Liu*andM. C. Mariani,NewMexicoState 3:00PM On the characterization of hyperelastic membranes University (1006-91-59)
(70) in soft-tissue mechanics. Padmanabhan Seshaiyer, TEXAS TECH UNIVERSITY (1006-35-240) 4:00PM Biological Growth and Remodeling in Soft Tissue: (71) Constrained Mixture Model with Constitutive Special Session on Real Algebraic Geometry, I Response in Smooth Muscle Dependent on the Population Number/Size. Preliminary report. 2:20 PM –4:50PM Room 010, Mathematics Dinara Khalmanova*, Pennsylvania State and Statistics Building University, Tsvetanka Sendova and Jay R. Walton, Texas A&M University (1006-92-229) Organizers: Anatoly Korchagin,TexasTech University David Weinberg,TexasTech Invited Address University 5:10 PM –6:00PM Biology Lecture Hall 2:20PM Arf invariants of links and and real algebraic 100, Biology Building (62) curves. Preliminary report. Patrick M Gilmer, Louisiana State University (72) Geometric splitting and superrigidity. (1006-57-52) Nicolas Monod, University of Chicago 3:00PM Real solutions to real sparse polynomial systems. (1006-51-265) (63) Preliminary report. Evgenia Soprunova*, University of Massachusetts, Reception Hosted by the Department of Mathematics and Frank Sottile, Texas A&M (1006-14-210) 3:40PM Singular Points of Real Quintic Curves. Preliminary 6:15 PM –7:30PM Club Level, Jones SBC Stadium (64) report. David A. Weinberg*andNicholas J. Willis,Texas Tech University (1006-14-136) 4:20PM Singular Points of Real Sextic Curves. Preliminary (65) report. Saturday, April 9 David A. Weinberg and Nicholas J. Willis*, Texas Tech University (1006-14-138) Meeting Registration

7:30 AM –4:00PM First Floor Lobby, Mathematics and Statistics Building Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, I AMS Exhibit and Book Sale

3:00 PM –4:50PM Room 014, Mathematics 7:30 AM –4:00PM Room 106, Mathematics and Statistics Building and Statistics Building Organizers: Alex Gorodnik, University of Michigan,Ann Arbor Special Session on Recent Advances in Complex Hee Oh, California Institute of Function Theory, II Technology 8:00 AM – 11:20 AM Room 011, Mathematics Nicolas Monod, University of Chicago and Statistics Building 3:00PM Metric classification of 3D Riemannian (66) homogeneous spaces of positive Ricci curvature. Organizers: Brock Williams, Texas Tech University Victor Patrangenaru, Texas Tech University, Roger W. Barnard,TexasTech Department of Mathematics and Statistics University (1006-53-33) Kent Pearce, Texas Tech University PM 3:30 Cocycle Superrigidity through geometry. 8:00AM On a Problem of Fournier, Ma and Ruscheweyh (67) Preliminary report. (73) concerning Extremal Bounded Convex Domains. David Fisher, CUNY Lehman College, and Theron J Preliminary report. Hitchman*, Rice University (1006-37-96) Roger W. Barnard, Casey RHume *andG. Brock 4:00PM Travelling Salesman Groups. Williams, Texas Tech University (1006-30-230) (68) Azer Akhmedov, University of California Santa 8:30AM Cases of equality for refinements of Bernstein’s Barbara (1006-51-122)
(74) inequality. 4:30PM Actions of Chevalley groups on hyperbolic spaces. Richard Fournier, CRM(Montreal,Canada) (69) Jason F Manning, Caltech (1006-20-95) (1006-30-46)

APRIL 2005 NOTICES OF THE AMS Appendix–17 Program of the Sessions – Lubbock, TX, Saturday, April 9 (cont’d.)

9:00AM Holder continuity of a class of quasiregular 8:30AM Cyclic Hamiltonian (Near-)Decompositions of the (75) mappings. (85) Complete Graph. Albert Baernstein II*andLeonid V. Kovalev, Heather J Gavlas, Illinois State University, and Joy Washington University (1006-30-158) M Morris*, University of Lethbridge, Canada 9:30AM Asymptotically Symmetric Embeddings and (1006-05-36) (76) Conformal Mappings. Preliminary report. 9:00AM Wiener index and subtrees of binary trees. Shanshuang Yang, Emory University (1006-30-127) (86) L. A. Szekely and H. Wang*, Department of 10:00AM Discussion (Generalized Quasispheres) Mathematics, University of South Carolina (1006-05-05) 10:30AM Sharp Power Mean Bounds for the Hypergeometric 9:30AM Domination in a graph with a 2-factor.
(77) Function 2F1. Kendall C Richards, Southwestern University (87) Ken-ichi Kawarabayashi, Tohoku University, (1006-33-81) Michael D. Plummer*, Vanderbilt University, and Akira Saito, Nihon University (1006-05-143) 11:00AM Overdetermined boundary value problems and (78) applications. 10:00AM Hamiltonian cycles in Cayley graphs of small order. Alexander Yu. Solynin, Department of Mathematics (88) Klavdija Kuntnar, Dragan Maruˇsiˇc, University of and Statistics, Texas Tech University (1006-30-222) Ljubljana, Dave Witte Morris*, Joy Morris, University of Lethbridge, and Primoz ˇSparl, University of Ljubljana (1006-05-42) 10:30AM Excessive factorizations of regular graphs. Special Session on Future Directions in Mathematical
(89) Preliminary report. Systems and Control Theory, II W. D. Wallis, Southern Illinois University, Carbondale (1006-05-74) 8:30 AM – 11:20 AM Room 108, Mass 11:00AM On minimum size edge-weightings inducing a Communications Building
(90) proper vertex coloring. Preliminary report. Saad I El-Zanati, Illinois State University, Heather Organizers: David Gilliam, Texas Tech University Gavlas, Mike Plantholt, Papa A Sissokho*, Illinois W. P. Dayawansa,TexasTech State university, and Jozef Skokan, University of University Sao Paulo (1006-05-80) 8:30AM A Zero Dynamics Design Methodology for (79) Regulation of a Class of Abstract Boundary Control Systems. Special Session on Statistical Image Processing and David S Gilliam*, Marinos Bagdati, Matthew Analysis and Applications, II Walker and Victor Shubov, Dept Math and Stat, Texas Tech University (1006-93-32) 8:30 AM – 11:20 AM Room 012, Mathematics 9:00AM Stability Preserving Approximation Schemes for and Statistics Building (80) Control Systems Governed by NFDEs. Janos Turi, University of Texas at Dallas Organizer: Victor Patrangenaru,TexasTech (1006-65-44) University 9:30AM Explicit Formulae for Several Two Qubit Evolutions. 8:30AM A Least Squares framework for robust Image (81) Viswanath Ramakrishna*, Mathematical Sciences, (91) Registration. Preliminary report. University of Texas at Dallas, and Hong Zhou, Roopesh Kumar*andBrian Nutter,TexasTech Mathematical Sciences, Univ of TX at Dallas University (1006-62-254) (1006-93-45) 9:00AM Two-channel Adaptive Orthonormal Filter Banks for 10:00AM Inverse Optimal Boundary Feedback Control of a 3D (92) Hyperspectral Imagery. Preliminary report.
(82) Channel Flow. Preliminary report. Mihaela D. Quirk*, Los Alamos National Laboratory Andras Balogh*andJose A Dominguez,The - Decision Applications Division, and Christopher University of Texas - Pan American (1006-35-43) M. Brislawn, Los Alamos National Laboratory (1006-94-168) 10:30AM Approximate Inversion of the Preisach Hysteresis (83) Operator with Application to Control of Smart 9:30AM Inter-Channel Correlation Measurements for Actuators.
(93) Estimation of Lost Wavelet Coefficients. Preliminary Ram V. Iyer*, Dept. of Mathematics and Statistics, report. Texas Tech University, TX 79409., Xiaobo Tan, Y Sriraja*, Sandip Krishnamurthy and Tanja Michigan State University, and P. S. Krishnaprasad, Karp, Department of Electrical and Computer University of Maryland (1006-46-61) Engineering,Texas Tech University (1006-94-179) 11:00AM On The Hamilton Jacobi Bellman Equation for a 10:00AM A Review of Recent Advances in the Mathematical
(84) Deterministic Optimal Control Problem. (94) Treatment of Image Analysis Problems, with Betsi J. Tirado*andJesus A. Pascal, Universidad Examples from Biomedical Image Analysis. del Zulia, Maracaibo, Venezuela (1006-49-258) Preliminary report. Hilary W Thompson, Louisiana State University Eye Center , Neuroscience, Medicine, and Biostatistics (1006-62-251) Special Session on Graph Theory, I 10:30AM Translation Multiresolution Analyses and its (95) application in Image processing. Preliminary report. 8:30 AM – 11:20 AM Room 013, Mathematics Josip Derado, Kennesaw State Uiversity and Statistics Building (1006-42-261) 11:00AM Nonparametric Density Estimation on Homogeneous Organizers: John C. George,EasternNewMexico (96) Spaces in High Level Image Analysis. University Robert L Paige*, Frits Ruymgaart, Vic Walter D. Wallis, Southern Illinois Patrangenaru and Jeff Lee, Texas Tech University University at Carbondale (1006-62-228)

Appendix–18 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Saturday, April 9 – Program of the Sessions

Special Session on Undergraduate and Graduate 11:00AM Stability Analyzes for Chemotaxic Models, and Student Research (and Related Poster Session (106) Application. organized by Ali Khoujmane and Mara D. Neusel, Akif Ibragiomv*, Texas Tech University, Laura Texas Tech), II Ritter and Jay Walton, Texs A&M College Station (1006-35-120) 8:30 AM –10:55AM Room 015, Mathematics and Statistics Building Organizers: Ali Khoujmane, Texas Tech University Special Session on Topology of Continua, II

Edward W. Swim,TexasTech 8:30 AM – 11:20 AM Room 110, Mathematics University and Statistics Building Edward J. Allen, Texas Tech University Padmanabhan Seshaiyer,TexasTech Organizer: Wayne Lewis, Texas Tech University University 8:30AM Continuous Extensions of Partial Metrics. 8:30AM An Investigation of Climatic and Geographic Factors (107) Preliminary report.
(97) on the Growth and Spread of Chytrid Fungus on E. D. Tymchatyn*, University of Saskatchewan, K. Amphibian Populations in Australia. Kawamura, University of Tsukuba, and A. Amy J. Drew*, Edward J. Allen and Linda J. S. Zagorodnyuk, University of Saskatchewan Allen, Texas Tech University (1006-92-148) (1006-54-114) 9:00AM Deterministic Modeling of the Effect of Reservoir 9:00AM Progress on the fixed point property for simple
(98) Hosts on the Spread of Chytrid Fungus within the (108) triod-like continua. Preliminary report. Barred Tiger Salamander Population. Preliminary Christopher G. Mouron, Rhodes College report. (1006-54-165) Jody Zuehlke*, Tarelton State University, and Keith 9:30AM When P-likeness implies Q-likeness for E. Emmert, Tarleton State University (1006-92-99) (109) indecomposable continua. 9:30AM Discrete-Time, Stage Structured Model for Equine Udayan B Darji, University of Louisville
(99) Protozoal Myloencephalitus. Preliminary report. (1006-54-157) Amy Riordan*andKeith E Emmert, Tarleton State 10:00AM Comparing the Symmetric Spans of a Disc and Its University (1006-92-97) (110) Boundary. 10:00AM An Analysis of Clattering Impacts of a Falling Rod. Thelma RWest , University of Louisiana at Lafayette
(100) Florin Vasile Badiu*, Jianzjong Su and Hua Shan, (1006-54-156) Department of Mathematics, University of Texas at 10:30AM Metrically Connected Spaces. Arlington (1006-70-11) (111) B. Dale Daniel, Lamar University (1006-54-79) 10:30AM Nonstandard Numerical Methods with Applications 11:00AM Discussion
(101) to Predator-Prey Models. Dobromir T Dimitrov, University of Texas - Arlington, Department of Mathematics (1006-65-27) Special Session on Differential Geometry and Its Applications, II

Special Session on Partial Differential Equation and 8:30 AM – 11:25 AM Room 108, Mathematics Its Application in Biomedical Study, II and Statistics Building Organizers: Josef F. Dorfmeister, Munich 8:30 AM – 11:20 AM Room 109, Mass University of Technology Communications Building Magdalena D. Toda,TexasTech Organizers: Jay R. Walton, Texas A&M University University Padmanabhan Seshaiyer,TexasTech Hongyou Wu, Northern Illinois University University Akif Ibragimov, Texas Tech University 8:30AM Complex ODE’s and Surfaces of Constant Mean 8:30AM Constitutive Restrictions for Isotropic Hyperelastic (112) Curvature. Preliminary report. (102) Material Modeled Using Invariants of Logarithmic Josef F. Dorfmeister*, ZentrumMathematik, Strain. TU-Muenchen and Department of Mathematics, T. Sendova*andJ. R. Walton, Department of University of Augsburg, and Shimpei Kobayashi, Mathematics, Texas A&M University (1006-74-191) Kobe University, Japan (1006-58-111) 9:00AM Effects of Diffusion and Stimuli on Bifurcating 9:30AM The Geometry of Harmonic maps into Special Linear (103) Rotating Waves In Excitable Media. (113) Groups. Preliminary report. John Alford Alford, Tulane University Magdalena Daniela Toda, Texas Tech University (1006-92-205) (1006-53-90) 9:30AM A Nonlinear Incompressible Elastic Mathematical 10:00AM CMC surfaces in Finsler spaces. Preliminary report. (104) Model of the Human Tongue. Preliminary report. (114) Vladimir Balan, University POLITEHNICA of Caroline Essex-Torcaso, Inst. for Systems Bucharest, ROMANIA (1006-53-107) Research, Univ. of Maryland, College Park, and 10:30AM The 1/κ flow and related geometric evolution William S Levine*,Dept.ofECE,Univ.ofMaryland, (115) equations for curves. College Park (1006-92-38) Thomas A. Ivey, College of Charleston 10:00AM A model of blood flow in compliant arteries: (1006-53-113)
(105) modeling, analysis, simulation and experimental 11:00AM Rendering Costa’s Minimal Surface with verification.
(116) Mathematica and 3D Printer Technology. Suncica Canic, University of Houston Preliminary report. (1006-35-184) M. Melko, Northern State University (1006-53-88)

APRIL 2005 NOTICES OF THE AMS Appendix–19 Program of the Sessions – Lubbock, TX, Saturday, April 9 (cont’d.)

Special Session on Classical and Differential Galois 9:00AM Integral bases for the SU(2)-TQFT-modules in genus Theory, II (127) one. Preliminary report. Khaled Moham Qazaqzeh, Baton Rouge/Louisiana 8:30 AM – 11:15 AM Room 114, Mathematics (1006-57-63) and Statistics Building 9:30AM Applications of Vassiliev invariants to the (128) classification of pseudo-Legendrian knots. Organizers: Lourdes Juan, Texas Tech University Vladimir V. Chernov, Dartmouth College Arne Ledet, Texas Tech University (1006-57-193) Andy R. Magid, University of 10:00AM On n-punctured ball tangles. Oklahoma (129) Jae-Wook Chung*andXiao-Song Lin, University of 8:30AM Essential dimension. California, Riverside (1006-57-175) (117) Arne Ledet, Texas Tech University (1006-12-171) 10:30AM Higher Hochschild homology of a Heegaard 9:00AM Differential Galois Theory of Second Order (130) splitting. Preliminary report. (118) Polynomial System. Preliminary report. Michael McLendon, Washington College Jinzhi Lei, Zhou Pei-Yuan Center for Applied (1006-57-201) Mathematics, Tsinghua University (1006-34-123) 11:00AM Turaev-Viro invariant and the Reidemeister torsion. 9:30AM Comparing cusps on modular curves to their (131) Charles Frohman, University of Iowa, and Joanna (119) Modular Tower generalization. Kania-Bartoszynska*, Boise State University/ Michael D Fried, MSU-Billings, UC Irvine National Science Foundation (1006-57-232) (1006-11-25) 10:00AM Groups as Differential Galois Groups. Preliminary (120) report. Special Session on Theory and Application of Julia Hartmann, IWR, Univeristy of Heidelberg Stochastic Differential Equations, II (1006-12-231) 10:30AM Integral and Iterative Differential Modules. 8:30 AM –10:50AM Room 121, Mass (121) Preliminary report. Communications Building B. Heinrich Matzat, University of Heidelberg (1006-12-264) Organizers: Edward J. Allen, Texas Tech University Armando Arciniega, University of Texas at San Antonio p Special Session on Topology of Dynamical Systems, II 8:30AM L -convergence of Waveform Relaxation Methods (132) for Numerical Integration of Stochastic Differential 8:30 AM – 11:20 AM Room 109, Mathematics Equations. and Statistics Building Henri Schurz, Southern Illinois University at Carbondale (1006-60-252) Organizer: Brian Raines, Baylor University 9:00AM A three-field finite element method for elliptic 8:30AM Discussion (133) partial differential equations driven by stochastic 9:00AM Discussion loads. 9:30AM Pitchfork Bifurcations of Invariant Manifolds. Scott R. Franklin*, Wayland Baptist University, (122) Jyoti Champanerkar*, WilliamPaterson University, Philip W. Smith and Padmanabhan Seshaiyer, and Denis Blackmore, New Jersey Institute of Texas Tech University (1006-60-87) Technology (1006-37-24) 9:30AM Reflected Stochastic Integro-Differential Equations 10:00AM Hedgehogs are in the limit set of a recurrent critical (134) in Convex Regions. Preliminary report.
(123) point. Preliminary report. Janusz S Golec, FordhamUniversity (1006-60-234) Doug Childers, University of Alabama at 10:00AM Stochastic Point Kinetics Equations in Nuclear Birmingham (1006-37-115) (135) Reactor Dynamics. 10:30AM Siegel and Cremer building blocks for polynomial James G Hayes*andEdward J Allen,TexasTech (124) Julia sets. Preliminary report. University (1006-60-09) John C Mayer, University of Alabama at 10:30AM Extrapolation for Stochastic Theta Numerical Birmingham (1006-30-196) (136) Methods. Preliminary report. 11:00AM Wandering d-gons in laminations. Preliminary Rachel C. Koskodan, Texas Tech University
(125) report. (1006-60-55) Lex G. Oversteegen*andAlexander Blokh,UAB (1006-37-173) Special Session on Real Algebraic Geometry, II

Special Session on Invariants of Links and 8:50 AM – 11:20 AM Room 010, Mathematics 3-Manifolds, I and Statistics Building

8:30 AM – 11:20 AM Room 111, Mathematics Organizers: Anatoly Korchagin,TexasTech and Statistics Building University David Weinberg,TexasTech Organizers: Mieczyslaw Krzysztof Dabkowski, University University of Texas at Dallas 8:50AM Experimentation and conjectures in the real Razvan Gelca, Texas Tech University
(137) Schubert calculus for flag manifolds. Preliminary Jozef Henryk Przytycki,George report. Washington University James V Ruffo*, Texas A&M University, Yuval 8:30AM On The Frohman Kania-Bartoszynska ideal. Sivan, Evgenia Soprunova, University of (126) Patrick M Gilmer, Louisiana State University Massachusetts at Amherst, and Frank Sottile, (1006-57-51) Texas A&M University (1006-14-197)

Appendix–20 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Saturday, April 9 – Program of the Sessions

9:30AM Efficient algorithms for computing the Betti Special Session on Homological Algebra and Its (138) numbers of semi-algebraic sets. Applications, II Saugata Basu, School of Mathematics, Georgia Tech (1006-55-153) 9:00 AM – 11:20 AM Room 112, Mathematics 10:10AM Real pencils of cubics applied to solve an and Statistics Building (139) interpolation problem. Organizers: Alex Martsinkovsky, Northeastern Severine C.M. Fiedler, Toulouse , France University (1006-14-209) Mara D. Neusel, Texas Tech University 10:50AM On arrangements of a plane quintic M-curve with (140) respect to a pair of lines. Preliminary report. 9:00AM Flat dimensions under base changes. Preliminary Anatoly B. Korchagin, Texas Tech University (148) report. (1006-14-195) Hans–Bjørn Foxby, University of Copenhagen (1006-16-124) 9:30AM Gorenstein dimension of modules finite over (149) homomorphisms. Preliminary report. Lars Winther Christensen*andSrikanth Iyengar, Special Session on Extinction, Periodicity, and Chaos University of Nebraska-Lincoln (1006-13-133) in Population and Epidemic Models, II 10:00AM Remarks on balance in generalized Tate (150) cohomology. 9:00 AM –10:50AM Room 110, Mass Alina C Iacob, Department of Mathematics, Communications Building University of Kentucky (1006-18-18) Organizers: LindaJ.S.Allen, Texas Tech University 10:30AM The finiteness and structure of the set of (151) semidualizing modules. Preliminary report. Sophia Ruey-Jen Jang, University of Sean M. Sather-Wagstaff, University of Louisiana at Lafayette Nebraska-Lincoln (1006-13-72) Lih-Ing W. Roeger,TexasTech 11:00AM A generalization of the Euler characteristic to University (152) modules of finite G-dimension. Preliminary report. 9:00AM A paradox of horizontal and vertical disease Sean Sather-Wagstaff and Diana White*,
(141) transmission. Preliminary report. University of Nebraska (1006-13-77) S. H. Faeth, School of Life Sciences, Arizona State University, K. P. Hadeler and HorstR.Thieme*, Department of Mathematics and Statistics, Arizona Invited Address State University (1006-92-112) 11:40 AM – 12:30 PM Biology Lecture Hall 9:30AM Discrete-time Epidemic Models.
(142) Abdul-Aziz Yakubu, Howard University 100, Biology Building (1006-92-155) (153) Diophantine problems and group actions. 10:00AM A Stoichiometric Discrete Predator-Prey Model: Hee Oh, California Institute of Technology
(143) Chaos and Its Implications. Yang Kuang, Arizona State University (1006-92-189) Invited Address 10:30AM Enrichment Thresholds for Growth and Predation. (144) Mary M Ballyk*, New Mexico State University, and 2:00 PM –2:50PM Biology Lecture Hall Gail S.K. Wolkowicz, McMaster University 100, Biology Building (1006-92-164) (154) Mapping class groups of surfaces and complexes of curves. Nikolai V. Ivanov, Michigan State University (1006-57-150) Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, II Special Session on Extinction, Periodicity, and Chaos in Population and Epidemic Models, III 9:00 AM – 11:20 AM Room 014, Mathematics and Statistics Building 3:00 PM –4:50PM Room 110, Mass Organizers: Alex Gorodnik, University of Communications Building Michigan,Ann Arbor Organizers: LindaJ.S.Allen, Texas Tech University Hee Oh, California Institute of Sophia Ruey-Jen Jang, University of Technology Louisiana at Lafayette Nicolas Monod, University of Chicago Lih-Ing W. Roeger,TexasTech 9:00AM Measurable rigidity for group actions on infinite University (145) volume homogeneous spaces. 3:00PM A Mathematical Model of Gene Transfer in a Biofilm. Alex Furman, University of Illinois at Chicago (UIC) (155) Hal L. Smith*, Don Jones, arizona State university, (1006-37-89) and Mudassar Imran, arizona state university 10:00AM Free subgroups of linear groups. (1006-92-53) (146) TGelander*, Yale, and E Breuillard,CNRS 3:30PM Rate disribution and survival of the fittest: A (1006-22-91) (156) formulation on the space of measures. 11:00AM Minimal volume entropy on trees. Preliminary Azmy S. Ackleh*, University of Louisiana at (147) report. Lafayette, Ben G. Fitzpatrick, Loyola Marymount Seonhee Lim, Yale university/ENS-Paris University, and Horst Thieme,ArizonaState (1006-37-147) University (1006-92-198)

APRIL 2005 NOTICES OF THE AMS Appendix–21 Program of the Sessions – Lubbock, TX, Saturday, April 9 (cont’d.)

4:00PM Dynamics of Two-Strain Influenza with Isolation and Special Session on Statistical Image Processing and (157) Partial Cross-Immunity. Analysis and Applications, III Zhilan Feng*, Purdue University, Miriam Nuno, Cornell University, Maia Martcheva, University of 3:00 PM –4:50PM Room 012, Mathematics Florida, and Carlos Castillo-Chavez,ArizonaState and Statistics Building University (1006-92-105) Organizer: Victor Patrangenaru,TexasTech 4:30PM Disease Emergence in Multihost Epidemic Models.
(158) Preliminary report. University Robert K McCormack*andLindaJ.S.Allen,Texas 3:00PM Statistical Analysis of Shapes of Planar Closed Tech University (1006-92-47) (167) Curves. Anuj Srivastava*, David Kaziska and Shantanu Joshi, Florida State University (1006-62-263) Special Session on Future Directions in Mathematical 3:30PM On the Analysis of Shapes and Images. Systems and Control Theory, III (168) Ajoy Roy*, Indian Institute of Technology, and Rabindra N Bhattacharya, University of Arizona 3:00 PM –4:50PM Room 108, Mass (1006-62-260) Communications Building 4:00PM On the computation of self-motion for an
(169) unmanned air vehicle from image sequences Organizers: David Gilliam, Texas Tech University without depth information. W. P. Dayawansa,TexasTech Ram V Iyer*, Raymond W Holsapple,Dept.of University Mathematics and Statistics, Texas Tech University, 3:00PM A neuro-muscular-elstod-dynamic model of the and Phillip Chandler, AFRL/VACA Air Vehicles (159) human arm. Directorate (1006-78-190) Lawrence Schovanec*, Department of Mathematics 4:30PM A statistical method for Glaucoma detection using and Statistics, Texas Tech University, and Alan (170) tomographic images. Barhorst, Department of Mechanical Engineering, Ananda Bandulasiri*, Victor Patrangenaru,Texas Texas Tech University (1006-93-92) Tech University, and Hilary Thompson, Louisiana 3:30PM Systems Modeling in Computational Biology. state university , eye center (1006-62-250) (160) Xiuxia Du, Washington University in St. Louis, and Bijoy Ghosh*, Washington University (1006-93-37) 4:00PM State-Shared Model for Multiple-Input (161) Multiple-Output Systems. Special Session on Undergraduate and Graduate Zhenhua Tian*andKarlene A Hoo,TexasTech Student Research (and Related Poster Session University (1006-93-50) organized by Ali Khoujmane and Mara D. Neusel, 4:30PM Vanka-type solvers for steady Stokes and Texas Tech), III (162) Navier-Stokes optimality systems. Sandro Manservisi, Texas Tech University 3:00 PM –4:45PM Room 015, Mathematics (1006-49-60) and Statistics Building Organizers: Ali Khoujmane, Texas Tech University Special Session on Graph Theory, II Edward W. Swim,TexasTech University

3:00 PM –4:50PM Room 013, Mathematics Edward J. Allen, Texas Tech University and Statistics Building Padmanabhan Seshaiyer,TexasTech University Organizers: John C. George,EasternNewMexico University 3:00PM Faculty Panel Walter D. Wallis, Southern Illinois 4:00PM Poster Session for Undergraduates and Graduates University at Carbondale (Room017) 3:00PM Neighborhood anti-Sperner Graphs. Preliminary
(163) report. John P McSorley, Southern Illinois University at Carbondale. (1006-05-94) Special Session on Discrete Groups, Homogeneous Spaces, Rigidity, III 3:30PM Symmetries that Latin Squares Inherit from (164) 1-Factorisations. 3:00 PM –4:45PM Room 014, Mathematics Ian M. Wanless, Department of Computer Science, Australian National University, and Edwin C. Ihrig*, and Statistics Building Department of Mathematics and Statistics, Arizona Organizers: Alex Gorodnik, University of State University (1006-05-106) Michigan,Ann Arbor 4:00PM Properties of closed neighborhood anti-Sperner
Hee Oh, California Institute of (165) graphs. Preliminary report. Technology Alison M. Marr*, John P. McSorley, Thomas D. Porter and W. D. Wallis, Southern Illinois University Nicolas Monod, University of Chicago (1006-05-246) 3:00PM Some arithmetic groups that cannot act on the line. 4:30PM Progress on the orientable genus of joins of (171) Lucy Lifschitz, University of Oklahoma, and (166) complete and edgeless graphs. Preliminary report. Dave Witte Morris*, University of Lethbridge Mark Ellingham*, Department of Mathematics, (1006-20-41) Vanderbilt Universiity, and Chris Stephens, 4:00PM Constructing diffeomorphisms to negatively curved Department of Mathematical Sciences, Middle (172) manifolds. Preliminary report. Tennessee State University (1006-05-30) Chris Connell, Indiana University (1006-53-116)

Appendix–22 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Saturday, April 9 – Program of the Sessions

Special Session on Partial Differential Equation and Special Session on Classical and Differential Galois Its Application in Biomedical Study, III Theory, III

3:00 PM –4:45PM Room 109, Mass 3:00 PM –4:45PM Room 114, Mathematics Communications Building and Statistics Building Organizers: Jay R. Walton, Texas A&M University Organizers: Lourdes Juan, Texas Tech University Padmanabhan Seshaiyer,TexasTech Arne Ledet, Texas Tech University University Andy R. Magid, University of Akif Ibragimov, Texas Tech University Oklahoma 3:00PM Computations of Multi-Scale Models of Cancer 3:00PM On vectorial polynomial and coverings in (173) Tumor Invasion. Preliminary report. (182) characteristic 3. Bruce P Ayati*, Southern Methodist University, and Teresa Crespo*, Universitat de Barcelona, Glenn F. Webb, Vanderbilt University (1006-92-139) and Zbigniew Hajto, University of Cracow (1006-12-245) 4:00PM A Mathematical Model of Atherogenesis as an (174) Inflammatory Response. 3:30PM Galois embedding problems and symmetric powers. A I Ibragimov, Dept. of Mathematics Texas Tech (183) Zbigniew Hajto*, Cracow (Poland), and Teresa University, CJMcNeal, Dept. of Internal Medicine, Crespo, University of Barcelona (1006-12-204) Div. of Cardiology, Dept. of Pediatrics, Div. of 4:00PM Hurwitz spaces, patching and profinite inverse Endocrinology, Scott & White, L RRitter *andJR (184) Galois theory. Walton, Dept. of Mathematics Texas A & M Pierre Debes*, Universite Lille 1, and Michel University (1006-35-06) Emsalem, Universite´ Lille 1 (1006-12-75)

Special Session on Homological Algebra and Its Special Session on Topology of Continua, III Applications, III

3:00 PM –4:50PM Room 110, Mathematics 3:00 PM –4:50PM Room 112, Mathematics and Statistics Building and Statistics Building Organizer: Wayne Lewis, Texas Tech University Organizers: Alex Martsinkovsky, Northeastern 3:00PM A Discussion of the Small-point Hyperspaces of University (175) Simple n-ods. Mara D. Neusel, Texas Tech University Eric L McDowell, Berry College (1006-54-167) 3:00PM Additive and multiplicative Q-ring operations on 3:30PM A new construction of simply connected (185) H∗BO∗. Preliminary report. (176) noncontractible cell-like continua. Terrence P. Bisson*, Canisius College, and Andr´e Duˇsan Repovˇs, Institute for Mathematics, Physics Joyal, UQAM (Universite du Quebec a Montreal) and Mechanics, University of Ljubljana (1006-54-07) (1006-55-160) 4:00PM Uniqueness of n-fold hyperspaces of a 3:30PM Discussion (177) compactification of a ray. 4:00PM Discussion Veronica Martinez-de-la-Vega, Universidad 4:30PM Primary Decomposition for Algebras with a Hopf Nacional Autonoma de Mexico (1006-54-214) (186) algebra action. Preliminary report. 4:30PM On 2-equivalent continua. Mara D Neusel, Texas Tech University
(178) Carlos Islas, Fac. de Ciencias UNAM (1006-54-216) (1006-13-188)

Special Session on Recent Advances in Complex Special Session on Differential Geometry and Its Function Theory, III Applications, III 3:00 PM –4:50PM Room 011, Mathematics 3:00 PM –4:55PM Room 108, Mathematics and Statistics Building and Statistics Building Organizers: Brock Williams, Texas Tech University Organizers: Josef F. Dorfmeister, Munich Roger W. Barnard,TexasTech University of Technology University Magdalena D. Toda,TexasTech Kent Pearce, Texas Tech University University 3:00PM A Sharp Bound on the Schwarzian Derivatives of Hongyou Wu, Northern Illinois
(187) Hyperbolically Convex Functions. University Leah J Cole*, Wayland Baptist University, Roger W 3:00PM The Bianchi-Baecklund Transformation for Constant Barnard, Kent Pearce and G Brock Williams,Texas (179) Mean Curvature Surfaces. Tech University (1006-30-226) Henry C. Wente*, University of Toledo, and 3:30PM A Schwarzian derivative criterion for univalence of Andraia Mahler, Toledo-Ohio (1006-53-20) (188) harmonic mappings. 4:00PM New and Old Applications of Bianchi-Backlund¨ Peter Duren*, University of Michigan, Martin
(180) Transformations. Chuaqui,P.UniversidadCatolica´ de Chile, and Andreia F. Mahler-Beilis, Internet Payment Brad Osgood, Stanford University (1006-30-93) Exchange, Inc. Toledo, Ohio (1006-53-21) 4:00PM Geometric Properties of a class of non-convex 4:30PM Backlund transformations for Weigarten surfaces. (189) harmonic maps. Preliminary report. (181) Preliminary report. Jane M McDougall*, Colorado College, and Lisbeth Hongyou Wu, Northern Illinois University Schaubroeck, United States Air Force Academy (1006-53-149) (1006-30-248)

APRIL 2005 NOTICES OF THE AMS Appendix–23 Program of the Sessions – Lubbock, TX, Saturday, April 9 (cont’d.)

4:30PM New and old results on the coefficients of classes of 4:30PM Applications of quandle cocycle invariants to knots (190) harmonic univalent functions. Preliminary report. (200) and graphs. Jay M Jahangiri*, Kent State University, Herb Masahico Saito, University of South Florida Silverman, College of Charleston, and Evelyn M (1006-57-163) Silvia, University of California at Davis (1006-30-10)

Special Session on Real Algebraic Geometry, III Special Session on Theory and Application of Stochastic Differential Equations, III 3:00 PM –4:50PM Room 010, Mathematics and Statistics Building 3:00 PM –4:50PM Room 121, Mass Communications Building Organizers: Anatoly Korchagin,TexasTech University Organizers: Edward J. Allen, Texas Tech University David Weinberg,TexasTech Armando Arciniega, University of University Texas at San Antonio 3:00PM On the RO(Z/2)-graded equivariant cohomology of 3:00PM Approximation for a stochastic logistic equation. (191) geometrically cellular real varieties.
(201) Brian Dennis, Department of Statistics/Universty of Paulo Lima-Filho*, Texas A&M University, and Idaho (1006-92-86) Pedro F. dos Santos, Instituto Superior Tecnico 3:30PM Numerical Study of Interacting Particle (1006-14-244) (202) Approximations for Integro-Differential Equations. 3:40PM Bounds and Algorithms for Real Polynomials Dan Stanescu, University of Wyoming
(192) Supported on Circuits. (1006-65-177) J. Maurice Rojas, Texas A&M University, 4:00PM Noise sustained wave propagation and its Department of Mathematics (1006-14-221) (203) application to mathematical neurosciences. 4:20PM Extension of Polya’s´ theorem to signomials with Mahbubur Rahman, UC Davis (1006-92-84)
(193) rational exponents. Preliminary report. 4:30PM Rounding Error In Numerical Solution of Stochastic Charles N. Delzell, Louisiana State University (204) Differential Equations. (1006-14-225) Armando Arciniega*, The University of Texas at San Antonio, and Edward J. Allen,TexasTech Special Session on Topology of Dynamical Systems, III University (1006-65-26)

3:00 PM –4:20PM Room 109, Mathematics and Statistics Building Session for Contributed Papers Organizer: Brian Raines, Baylor University 3:00 PM –4:55PM Room 016, Mathematics 3:00PM Adding Machines in the Tent Family of Maps. and Statistics Building (194) Louis Block, James Keesling*, University of Florida, and Michal Misiurewicz, Indiana 3:00PM Maximizing Functionals Over a Class of Univ-Purdue Univ Indianapolis (1006-13-194) (205) Hyperbolically Convex Functions. Preliminary report. 3:30PM Topological classification of inverse limit spaces of Roger Barnard, David R. Martin*andG. Brock (195) tent maps with finite critical orbit. Williams, Texas Tech University (1006-30-255) Sonja ˇStimac, Graduate School of Economics and 3:15PM Mapping of Radial Slit Domains and the Business, University of Zagreb (1006-37-131)
(206) Fundamental Frequency of a Drum. 4:00PM Asymptotic arc-composants in unimodal inverse Philip RBrown , Texas A&M University at Galveston (196) limit spaces. (1006-30-73) Henk Bruin, University of Surrey (1006-37-137) 3:30PM On Fractional Fourier transform on Hovell’s space. (207) Bharat N. Bhosale, University of Mumbai Special Session on Invariants of Links and (1006-44-08) 3-Manifolds, II 3:45PM Application of the Hajek´ -LeCam Convolution (208) Theorem. Preliminary report. 3:00 PM –4:50PM Room 111, Mathematics Eun-Joo Lee*, Illinois College, and Frits and Statistics Building Ruymgaart, Texas Tech University (1006-62-22) 4:00PM Checking the Censored Two-Sample Accelerated Life Organizers: Mieczyslaw Krzysztof Dabkowski, (209) Model using Integrated Cumulative Hazard University of Texas at Dallas Difference. Razvan Gelca, Texas Tech University Seung-Hwan Lee*, Illinois Wesleyan University, and Jozef Henryk Przytycki,George Song Yang, NIH (1006-62-23) Washington University 4:15PM High Order Polynomial-based Quadratures on Two 3:00PM Tangles and Virtual Tangles. Preliminary report.
(210) Dimensional Structures.
(197) Louis H. Kauffman*, University of Illinois at Hong Xiao, University of California at Davis Chicago, and Sofia Lambropoulou, National (1006-65-242) Technical University of Athens (1006-57-104) 4:30PM The use of measures of disarray for comparing 3:30PM Non-additive versions of the Hennings (KRH) (211) sorting algorithms with erroneous comparisons. (198) invariant. Preliminary report. Preliminary report. Fernando J. O. Souza, University of Iowa Petros Hadjicostas, Texas Tech University (1006-57-262) (1006-05-203) 4:00PM Skein Theory and String Topology. Preliminary 4:45PM Energy and Flows on 3-manifolds. Preliminary (199) report. (212) report. Nikolaos E. Apostolakis and Uwe Kaiser*, Boise A Fawaz, The University of Texas of the Permian State University (1006-57-176) Basin (1006-53-29)

Appendix–24 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Sunday, April 10 – Program of the Sessions

Poster Session for Undergraduate and Graduate Special Session on Future Directions in Mathematical Students Systems and Control Theory, IV

4:00 PM –5:00PM Room 017, Mathematics 8:30 AM –9:50AM Room 108, Mass and Statistics Building Communications Building This is associated with the Session on Organizers: David Gilliam, Texas Tech University Undergraduate and Graduate Student Research W. P. Dayawansa,TexasTech Organizers: Ali Khoujmane, Texas Tech University University Mara D. Neusel, Texas Tech University 8:30AM Java and Control Systems Simulations.
(220) Channa N Navaratna, Texas Tech University, Lubbock, TX 79413 (1006-93-192) 9:00AM Almost-Global Tracking of Simple Mechanical Invited Address (221) Systems on a General Class of Lie Groups. Sanjeeva D. H. Maithripala*, Post Doctoral 5:10 PM –6:00PM Biology Lecture Hall Research Associate/Texas Tech University, 100, Biology Building Jordan M Berg and Wijesuriya P Dayawansa, (213) Singularities and complex dynamics. Professor/Texas Tech University (1006-93-185) Mattias Jonsson, University of Michigan 9:30AM Generating Stable Travelling Pulses in Mems (1006-00-04)
(222) Arrays. Preliminary report. Rathnamalee Palamakumbura, Department of Mathematics and Statistics, Texas Tech University, Sanjeewa Maithripala, Department of Mechanical Engineering, Texas Tech University, and Wijesuriua Dayawansa*, Department of Mathematics and Statistics, Texas Tech University (1006-93-57) Sunday, April 10

Special Session on Topology of Continua, IV Special Session on Recent Advances in Complex Function Theory, IV 8:30 AM – 11:20 AM Room 110, Mathematics and Statistics Building 8:00 AM –10:50AM Room 011, Mathematics and Statistics Building Organizer: Wayne Lewis, Texas Tech University 8:30AM Metrics on Hyperspaces - Intuition and Theory. Organizers: Brock Williams, Texas Tech University (223) Wlodzimierz J. Charatonik*andMatt Insall, Roger W. Barnard,TexasTech University of Missouri-Rolla (1006-54-218) University 9:00AM Compactifications of [0, ∞) are Fn-determined if n is Kent Pearce, Texas Tech University (224) different from 3. Jorge M Martinez-Montejano, Instituto de 8:00AM Weighted distortion in conformal mapping in (214) euclidean, hyperbolic and elliptic geometry. Matematicas, UNAM (1006-54-238) Daniela Kraus and Oliver Roth*, Department of 9:30AM Representation of the Composant Equivalence Mathematics, University of Wu¨rzburg, Germany (225) Relation for Indecomposable Continua. Preliminary (1006-30-125) report. David J Ryden, Baylor University (1006-54-247) 8:30AM Geodesics and curvature of a Mobius¨ invariant
(215) metric. Preliminary report. 10:00AM Equidistant sets of boundary components for Zair Ibragimov*, David Herron and David Minda,
(226) connected open sets in the complex sphere. University of Cincinnati (1006-30-17) Preliminary report. Jan Aarts, Technical University Delft, The 9:00AM A Variational Method for Hyperbolically Convex (216) Functions. Netherlands, Gaston Brouwer*andLex Roger W Barnard, Texas Tech University, G Lenny Oversteegen, University of Alabama at Birmingham Ornas*, McNeese State University, and Kent (UAB) (1006-54-257) Pearce, Texas Tech University (1006-30-227) 10:30AM Discussion 9:30AM Parametric representation and linear functionals 11:00AM Discussion (217) associated with extension operators for biholomorphic mappings. Ian Graham, University of Toronto, Gabriela Kohr, Babes-Bolyai University, and John Pfaltzgraff*, Special Session on Differential Geometry and Its University of North Carolina (1006-32-166) Applications, IV 10:00AM Linear Invariant Families on the Ball, Extremal (218) Problems and Invariant Mappings. Preliminary 8:30 AM – 11:25 AM Room 108, Mathematics report. and Statistics Building John A. Pfaltzgraff, UNC Chapel Hill, and Ted J. Suffridge*, University of Kentucky (1006-32-211) Organizers: Josef F. Dorfmeister, Munich University of Technology 10:30AM Minimal area problem for nonvanishing functions. (219) Preliminary report. Magdalena D. Toda,TexasTech Clint Richardson*, Stephen F. Austin State University University, Roger W. Barnard and Alex Yu. Solynin, Hongyou Wu, Northern Illinois Texas Tech University (1006-30-207) University

APRIL 2005 NOTICES OF THE AMS Appendix–25 Program of the Sessions – Lubbock, TX, Sunday, April 10 (cont’d.)

8:30AM Soliton solutions of the self-dual Yang-Mills equation 11:00AM Inverse limits applied to a Cash-in-advance model (227) on R2,2. (238) from economics. Bo Dai*, University of California, Irvine and Peking Judy A Kennedy*, David RStockman , University of University, and Chuu-Lian Terng, Department of Delaware, and James A Yorke, University of Mathematics, University of California, Irvine Maryland (1006-37-129) (1006-53-140) 9:30AM Harmonic maps from the plane to Lie groups and Special Session on Extinction, Periodicity, and Chaos (228) symmetric spaces. Preliminary report. in Population and Epidemic Models, IV Emma Carberry*, Massachusetts Institute of Technology, Ian McIntosh, University of York, and 9:00 AM –10:20AM Room 110, Mass Erxiao Wang, University of Texas at Austin Communications Building (1006-53-119) Organizers: LindaJ.S.Allen, Texas Tech University 10:00AM The Geometry of the Smallest Circle Enclosing a
(229) FiniteSetofPoints. Sophia Ruey-Jen Jang, University of Lance D. Drager*, Texas Tech University, Louisiana at Lafayette Department of Math and Stat., Jeffery M. Lee, Lih-Ing W. Roeger,TexasTech Texas Tech University, Dept. of Math and Stat., and University Clyde F. Martin, Texas Tech University, Department 9:00AM The impact of isolation on population growth and of Math and Stat. (1006-51-186)
(239) epidemic propagation. 10:30AM Witten deformation and index of Dirac operators. Fabio Augusto Milner*, Department of (230) Igor Prokhorenkov*andKen Richardson,Texas Mathematics, Purdue University, and Daniel Maxin, Christian University (1006-58-13) Department of MAthematics, Purdue University 11:00AM Discussion (1006-92-130) 9:30AM A Discrete SIS-Model for a Vector-Transmitted Special Session on Classical and Differential Galois
(240) Disease. Preliminary report. Theory, IV K. W. Blayneh, Florida A&M University (1006-37-224) 8:30 AM – 11:15 AM Room 114, Mathematics 10:00AM A class of nonstandard symplectic discretization and Statistics Building (241) methods for Lotka-Volterra system. Preliminary report. Organizers: Lourdes Juan, Texas Tech University Lih-Ing Wu Roeger, Texas Tech University Arne Ledet, Texas Tech University (1006-65-54) Andy R. Magid, University of Oklahoma Special Session on Discrete Groups, Homogeneous 8:30AM Generic Picard-Vessiot extensions and generic Spaces, Rigidity, IV (231) equations. Lourdes Juan*, Texas Tech University, and Andy 9:00 AM – 11:20 AM Room 014, Mathematics Magid, University of Oklahoma (1006-12-200) and Statistics Building 9:00AM Regular realizations of p-groups. Preliminary (232) report. Organizers: Alex Gorodnik, University of John L. Hammond, University of Texas at Austin Michigan,Ann Arbor (1006-12-141) Hee Oh, California Institute of 9:30AM Cyclic Algebras over p-adic Curves. Technology (233) David J Saltman, University of Texas at Austin Nicolas Monod, University of Chicago (1006-16-161) 9:00AM Asymptotic expenders and Ramanujan graphs. 10:30AM Galois theory of parameterized differential
(242) Preliminary report. (234) equations and linear differential algebraic groups. Rostislav Grigorchuk, Texas A&M University Phyllis J Cassidy, The City College of New York (1006-20-100) City, and Michael F Singer*, North Carolina State 10:00AM Divergent torus orbits in homogeneous spaces of university (1006-12-58) (243) rational rank two. Pralay Chatterjee*, Department of Maths, Rice Special Session on Topology of Dynamical Systems, IV University, and Dave Witte Morris, Department of Mathematics and Computer Science, University of 8:30 AM – 11:20 AM Room 109, Mathematics Lethbridge (1006-00-121) and Statistics Building 10:30AM Weakly hyperbolic actions of Kazhdan groups on Organizer: Brian Raines, Baylor University (244) tori. Benjamin I Schmidt, University of Michigan 8:30AM Discussion (1006-37-83) 9:00AM Discussion 11:00AM Multiple mixing of non-commuting automorphisms. 9:30AM The structure of R-actions. Preliminary report. (245) Preliminary report.
(235) Rolf Suabedissen, University of Oxford, UK Alexander Gorodnik, California Institute of (1006-54-154) Technology (1006-37-118) 10:00AM Chainability and Hemmingsen’s theorem. (236) Paul Bankston*, Marquette University, Brian Special Session on Partial Differential Equation and Raines, Baylor University, and Wim Ruitenburg, Marquette University (1006-54-70) Its Application in Biomedical Study, IV

10:30AM Siegel Disks Whose Boundaries Have Only Two 9:00 AM –10:45AM Room 109, Mass (237) Complementary Domains. Communications Building James T Rogers, Jr., Tulane University (1006-37-31) Organizers: Jay R. Walton, Texas A&M University

Appendix–26 NOTICES OF THE AMS VOLUME 52, NUMBER 4 Lubbock, TX, Sunday, April 10 – Program of the Sessions

Padmanabhan Seshaiyer,TexasTech University Akif Ibragimov, Texas Tech University 9:00AM On the Existence of Traveling Wave Solutions for a (246) Parabolic-Hyperbolic System Arising from a Size Dependent Population Model. A I Ibragimov, Texas Tech University, and JR Walton*, Texas A&M University (1006-35-128) 10:00AM Simulation and Modeling in Bilogical Systems (247) (Problem Descussion). Akif Ibragimov, Texas Tech University (1006-92-217)

Special Session on Invariants of Links and 3-Manifolds, III

9:00 AM – 11:20 AM Room 111, Mathematics and Statistics Building Organizers: Mieczyslaw Krzysztof Dabkowski, University of Texas at Dallas Razvan Gelca, Texas Tech University Jozef Henryk Przytycki,George Washington University 9:00AM The Alexander polynomial and knot homologies. (248) Charles Frohman*, The University of Iowa, and Oliver Dasbach, Louisiana State University (1006-57-172) 9:30AM The Noncommutative A-polynomial of Torus Knots. (249) Preliminary report. Kristen Sellke, The University of Iowa (1006-57-170) 10:00AM Notes on the Kauffman bracket skein module of (250) handlebodies. Fumikazu Nagasato, Department of Mathematics, Tokyo Institute of Technology, Japan (FromApril, 1st) (1006-51-146) 10:30AM Spanning Trees and Khovanov Homology.
(251) Abhijit Champanerkar*, University of South Alabama, Ilya Kofman, Barnard College, Columbia University, and Oleg Viro, Uppsala University (1006-57-117) 11:00AM On Kauffman’s spanning tree expansion of the (252) Alexander Polynomial. Preliminary report. Oliver Dasbach*, LSU, and Charles Frohman, University of Iowa (1006-57-256)

Special Session on Real Algebraic Geometry, IV

9:20 AM –10:30AM Room 010, Mathematics and Statistics Building Organizers: Anatoly Korchagin,TexasTech University David Weinberg,TexasTech University 9:20AM Rigid isotopies of real y-trinomial curves. (253) Preliminary report. Victor I. Zvonilov, Syktyvkar State University (1006-14-40) 10:00AM The classification of M-curves of bidegree (d, 3) (254) with d ≥ 2 on the torus. Preliminary report. Lina M. Williams*andAnatoly B. Korchagin, Texas Tech University (1006-14-213)

Susan J. Friedlander Associate Secretary Chicago, Illinois

APRIL 2005 NOTICES OF THE AMS Appendix–27