300

LIST OF PARTICIPANTS

V.M. ADAMJAN Francuzskij Bul'var 12, Korp. 1, kw. 4, 270044, ; Dept. of Theoretical Physics, , Petra Velikogo 2, 70100 Odessa, Ukraine email: [email protected]@ussr.eu.net

D. ALPAY Dept. of Mathematics, P.O. Box 653, Ben Gurion University, Beer Sheva 84105 Israel email: [email protected]

T. ANDO Research Inst. of Electronic Science, Hokkaido University, Sapporo 060, Japan email: [email protected] D.Z. AROV Prospekt Dimitrova 15/8, 270104 Odessa, Ukraine email: [email protected]

T.J. AZlZOV Khol'zunova, 40-b, kv. 37, 294068 Voronezh - 68, Russia email: [email protected]

.J.A. BALL Dept. of Mathematics, Virginia Polytechnic Institute and State University Blacksburg, Virginia 24061-0123 U.S.A. email: [email protected]

L. BARATCHART Projet MIAUO, INRIA-Sophia-antipolis, B.P. 93, F -06902 Sophia-antipolis, France email: [email protected]

H. BART Econometrics Institute, Erasmus University Rotterdam, Postbus 1738, NL-3000 DR Rotterdam, The Netherlands email: [email protected]

A. BEN-ARTZI School of Mathematical Sciences, Tel-Aviv University, 69978 Tel Aviv, Israel email: [email protected] c. BINDER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria email: [email protected] 301

P. BINDING Dept. of Mathematics, University of Calgary, Calgary, AB, T2N1N4, Canada email: binding0acs.ucalgary.ca

M. BLUMLINGER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria email: mbluemli0email.tuwien.ac.at

B. BODENSTORFER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1144, A-1040 Vienna, Austria

J. BOGNAR Mathematical Institute, Hungarian Academy of Sciences, P.O.B. 127, H-1364 Budapest, Hungary

L. DE BRANGES Le Hameau de IYvette, Batiment D, Chemin des Graviers, F-91190 Gif-sur-Yvette, France

C. DAVIS Dept. of Mathematics, University of Toronto, Toronto, Ontario, M5S 1A1, Canada email: davis0math.toronto.edu

G. DERFEL Dept. of Mathematics, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel email: derfe10bengus.bitnet

M. DRITSCHEL Purdue University, Math. Sciences Bldg. West Lafayette, IN 47906 U.S.A. email: mad0cs.wm.edu H.DYM Dept. of Theoretical Mathematics, The Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel email: mtdym0weizmann.weizmann.ac.il

M. FAIERMAN Dept. of Mathematics, University of Witwatersrand, Private Bag 3, Johannesburg, WITS 2050, South Africa

I.A. FELDMAN Dept. of Mathematics, Bar-Han University, Ramat-gan 52900, Israel email: feldmni0bimacs.cs.biu.ac.il 302

A. FLEIGE FB Mathematik, Univ. Essen, Universitatsstr. 2, D-45117 Essen, Germany email: [email protected]

C. FOIAS Dept. of Mathematics, Indiana University, Swain Hall, East Bloomington, Indiana 47408, U.S.A. email: [email protected]

B. FRITZSCHE FB Mathematik/lnformatik, Universitat Leipzig, Augustuspl. 10, D-04I09 Leipzig, Germany

D. GASPAR Dept. of Mathematics, University of Timisoara, Bul.V.Parvan nr. 4, RO-I900 Timisoara, Romania

M. GEBEL FB Mathematik, U niversitat Halle-Wittenberg, Gimritzer Damm, Postfach, D-06099 Halle (Saale), Germany

A. GHEONDEA Institute of Mathematics of the Romanian Academy, P.O.Box 1-764, Romania

1. GOHBERG School of Mathematical Sciences, Tel Aviv University, Ramat Aviv 69978, Israel email: [email protected]

J. GOTTLIEB Inst. fur Bodenmechanik und Felsmechanik, Universitat (TH) Karlsruhe, Richard Willstadter-Allee, D-76128 Karlsruhe 1, Postfach 6980, Germany email: [email protected]

E. GRINSHPUN Dept. of Mathematics and Camp. Sci., Ben Gurian University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel email: [email protected]

S. HASSI Dept. of Statistics, University of Helsinki, Aleksanterinkatu 7, SF-OOIOO Helsinki 7, Finland email: [email protected]

G. HEINIG Bruno-Granz-Str. 46, D-09122 Chemnitz, Germany email: [email protected] 303

J.W. HELTON Dept. of Mathematics, University of California at San Diego, La Jolla, California 92037, U.S.A. email: [email protected]

D. HINTON Dept. of Mathematics, University of Tennessee, Knoxville, Tennessee, 37 996-1300, U.S.A.

J. Hu Dept. of Mathematics, Hong Kong Univ. of Science and Techn .. Clear Water Bay, Kowloon, Hong Kong email: [email protected]

C.R. JOHNSON Dept. of Mathematics, The College of William and Mary, Williamsburg, Virginia 23185, U.S.A. email: [email protected]; [email protected] (after Dec 31, 1993)

P. JONAS Neltestr. 12, D-12489 Berlin, Germany

M.A. KAASHOEK Faculteit Wiskunde en Informatica, Vrije Universiteit, De Boelelaan 1081 a, NL-1081 HV Armterdam, The Netherlands email: [email protected]

W. KABALLO FB Mathematik, Univ. Dortmund, Postfach 500 500. D-44309 Dortmund 50, Germany

V.E. KATSNELSON Dept. of Theoretical Mathematics, The Weitzmann Inst, Rehovot 76100, Israel; Fachbereich Mathematik, Universitiit Leipzig, D-04103 Leipzig, Germany email: [email protected]

B. KIRSTEIN FB Mathematik. Universitiit Leipzig, Augustuspl. 10, D-04109 Leipzi).';, Germany .J. Kos Faculteit Wiskunde en Informatica, De Boelelaan 1081 a, Vrije Universiteit. NL-1081 HV Amsterdam, The Netherlands email: [email protected]

A. KOZHEVNIKOV Dept. of Math. and Comp.Sc., University of Haifa. Haifa 31905. Israel email: [email protected] 304

N. KRUPNIK Dept. of Mathematics, Bar-Han University, Ramat-Gan 52900, Israel email: krupnik~bimacs.cs.biu.ac.il

P. LANCASTER Dept. of Mathematics, University of Calgary, Calgary, AB, T2N1N4, Canada email: lancaste~acs.ucalgary.ca

H. LANGER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria email: hlanger~email.tuwien.ac.at

H. LEHNIN G ER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria

H.-J. LINDEN FB Mathematik, Fernuniv. Hagen, Postfach 940, D-58084 Hagen 1, Germany

M. LUNDQUIST Dept. of Mathematics, Brigham Young Univeristy, Provo, Utah 84057, U.S.A. email: mike~math.byu.edu

S.A.M. MARCANTOGNINI Universidad Simon Bolivar, Depto. de matematicas puras y apI., Apartado Postal 89000, Caracas 1096-A, Venezuela email: stefania~usb.ve

A.S. MARKUS Dept. of Mathematics, Ben Gurion University, P.O. Box 653, Beer Sheva 84105, Israel email: markus~black.bgu.ac.il

V.1. MATSAEV Dept. of Mathematics, Tel-Aviv University, Tel-Aviv, Ramat-Aviv 69978, Israel email: matsaev~math.tau.ac.il

R. MENNICKEN FB Mathematik, Univ. Regensburg, Universitatstr. 31, D-93053 Regensburg, Germany email: mennicken~vaxl.rz.uni-regensburg.dbp.de

A. MINGARELLI Dept. of Math. and Statistics, Carleton University, 710 Dunton Tower, Ottawa, K1S 5B6, Canada 305

A. MLADENKA Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria

M. MOLLER Dept. of Mathematics, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS 2050, South Africa email: [email protected]

B. NAJMAN Dept. of Mathematics, , Bijenicka 30, 41000 Zagreb, Croatia email: [email protected]

T. NAKAZI Dept. of Mathematics, Hokkaido University, Sapporo 060, Japan

A.A. NUDELMAN Ul. Frunze 141/187, 270005, Odessa-5, Ukraine email: [email protected]

A. OCTAVIa IVIC M-S8L P.O.Box 020010, Miami, FL 33102-0010, U.S.A. email: [email protected]; [email protected]

V.V. PELLER Branch of the V.A.Steklov Mathematical Institute, Fontanka 27. 191011 St.Petersburg, Russia; Dept. of Mathematics, University of Hawaii, Honolulu, HI 96822, U.S.A. email: [email protected]

POMET Projet MIAUO, INRIA-Sophia-antipolis, B.P. 93, F -06902 Sophia-antipolis. France

"'vI. RAKOWSKI Dept. Mathematics, The Ohio State University, 231 West, 18th Avenue, Columbus, OH 43210, "c.S.A. email: [email protected]

A.C.~1. RAN Faculteit Wiskunde en Informatica, Vrije Universiteit, De Boelelaan 1081, NL-1081 HV Amsterdam, The Netherlands email: [email protected] S. Roell Ulmenstr. 29, D-09112 Chemnitz (TU Chemnitz)

L. RODMAN Dept. of Mathematics, The College of William an Mary, Williamsburg, Virginia 23185-8795, U.S.A. email: [email protected] 306

C.S. SADOSKY Dept. of Mathematics, Howard University, Washington DC 20059-0001, U.S.A. email: cora~msri.org; cs~scsla.howard.edu

L.A. SAKHNOVICH pro Dobrovolskogo 154, ap. 199, Odessa, 270111, Ukraine

N. SALINAS Dept. of Mathematics, University of Kansas, ,405 Snow Hall, Lawrence, KS 66045-2142, U.S.A. email: norberto~ukanvax.bitnet;norberto~kuhnb.cc.ukans.edu

K. SEDDIGHI Dept. of Mathematics, Shiraz University, Iran; ICTP, P.O.Box 586, 1-34100 Trieste, Italy email: seddighi~ictp.trieste.it

A.A. SHKALIKOV Dept. of Mathematics, Moscow State University, Moscow 119899, Russia; FB Mathematik, Univ. Regensburg, Universitiitstr. 31, D-93053 Regensburg, Germany email: shkalikov~vax1.rz.uni-regensburg.dbp.de

E. SIMEONOV Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria

H.S.V. DE SNOO Afdeling Wiskunde en Informatica, Rijksuniversiteit Groningen, Post bus 800, NL-9700 AV Groningen, The Netherlands email: desnoo~math.rug.nl

M. SONNTAG Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1144, A-1040 Vienna, Austria

S. STEP IN Dept. of Mathematics, Moscow State University, Moscow 119899, ~ussia email: shkal~compnet.npimsu.msk.su

I. SUCIU Inst. of Math., Romanian Academy, Calea Grivitei 21, P.O. Box 1-764, RO- 70700 Bucarest, Romania email: isuciu~roimar.bitnet 307

F. SZAFRANIEC Mathematical Inst., University of Cramw, u1. Reymonta 4, PL-30059 Cramw, Polen; Universidao Carlo~ III de Macirid, Avda. Mediterraneo 20, E-28913 Le/Sant's (Madrid). Spain email: [email protected]

D. TEMME Faculteit Wiskunde en Informatica, De Boelelaan 1081 a, Vrije Universiteit, NL-1081 HV Amsterdam, Tht' Ndlwrlands email: [email protected]

P. THIJSSE Econometrics Insti tu te, Erasmu~ U ni versi ty Rotterdam, NL-3000 DR Rotterdam. The Netherlands

S. TREIL Dept. of Mathematics, Michi/Sall State University, East Lallsing, MI 48824-1027, U.S.A. email: [email protected]

CH. TRETTER FB Mathematik, Univ. Regenslmrg. Universitiitstr. 31. D-93053 Regensburg, Germany email: [email protected]

1. VAL USESCU Inst. of Mathematics of the Romanian Academy, P.O. Box 1-764, RO-70700 Bucarest, Romania email: [email protected]

K. VESELI(~ FB Mathematik, Fernuniv. Hagm. Postfach 940. D-58084 Hagen 1, Germany email: [email protected]

V. VINNIKOV Dept. of Theoretical Mathematics, Weizmann Institute of Science, Rehovot 76100, Israel email: [email protected]

F. VOGL Inst. f. Analysis, Teclm. Math. u. Versichenlll/Ssmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-I040 Vit'nmL Austria

R. VONHOFF Fachbereich Mathematik, Universitilt DortIll1111d. Postfach 500 500, D-44309 Dortmund, Germany email:[email protected] 308

H. WINKLER Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria

H. WOERDEMAN Dept. of Mathematics, The College of William and Mary, Williamsburg, Virginia 23187, U.S.A. email: hugo~cs.wm.edu

H. WORACEK Inst. f. Analysis, Techn. Math. u. Versicherungsmath., TU Vienna, Wiedner Hauptstr. 8-10/1141, A-1040 Vienna, Austria

J. ZEMANEK Inst. of Mathematics, Polish Academy of Sciences, PO Box 137, P-00950 Warschau, Polen email: zemanek~impan.impan.gov.pl

P. ZIZLER Dept. of Mathematics, University of Calgary, 2500 University Drive N.W., Calgary, AB, T2N1N4, Canada email: zizler~acs.ucalgary.ca

N. ZORBOSKA Dept. of Math. amd Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada email: zorbosk~ccu.umanitoba.ca

R. ZUIDWIJK Tinbergen Institute, Oostmaaslaan 950-952, NL-3063 DM Rotterdam, The Netherlands email: zuidwijk~tir.few.eur.nl 309

LIST OF LECTURES

V.M. ADAMJAN(Odessa, Ukraine) On eigenvector expansions associated with operator-valued R-functions. D. ALPAY(Beer Sheva, Israel) Reproducing kernel spaces on Riemann surfaces. T. ANDO(Sapporo, Japan) Matrix inequalities and norm inequalities. D.Z. ARov(Odessa, Ukraine) Computation the resolvent matrices for the generalized bitangential Schur• and Caratheodory- Nevanlinna-Pick problems in the strictly completely in• determinant case. T.J. AZIZOv(Voronezh, Russia) On some development of the S. Krein pencil theory. J.A. BALL(Blacksburg, Virginia, U.S.A.) Zero-pole interpolation problems for meromorphic matrix functions on Rie• mann surfaces. L. BARATCHART(Sophia-antipolis, France) Traces of Hardy functions of the circle and bounded extremal problems. H. BART(Rotterdam, The Netherlands) Logarithmic residues and zero sums of idempotents in Banach algebras. A. BEN-ARTZI(Tel Aviv, Israel) Orthogonal polynomials and interpolation in Hilbert modules. P. BINDING( Calgary, Canada) Eigenparameter dependent boundary conditions for Sturm-Liouville problems. J. BOGNAR(Budapest, Hungary) Spectral radius and fundamental norms in infinite dimensions.

L. DE BRANGEs(Gif Sur Yvette, France) Pontryagin spaces of analytic functions. G. DERFEL(Beer Sheva, Israel) Functional and functional-differential equations with rescaling. M. DRITSCHEL(West Lafayette, Indiana, U.S.A.) The Agler boundary and linear extreme points of the numerical radius unit ball, II. H. DYM(Rehovot, Israel) On the zeros of a class of matrix functions and some related extension pro• blems. 310

M. FAIERMAN(Johannesburg, South Africa) On the spectral theory of an elliptic boundary value problem involving an indefinite weight.

LA. FELDMAN (Ramat-gan, Israel) Explicit factorization of some 2 x 2 matrix functions. A. FLEIGE(Essen, Germany) Turning point conditions of Beals for indefinite Sturm-Liouville problems. C. FOlAs(Bloomington, Indiana, U.S.A.) Extensions of intertwining contractions and causality in the commutant lif• ting theorem. D. GAsPAR(Timisoara, Rumania) Invariant subspaces in the bitorus. M. GEBEL(Halle- Wittemberg, Germany) Elementary proof of the spectral theorem for bounded definitizable operators. A. GHEONDEA(Bucharest, Rumania) . On the signatures of the selfadjoint pencil >"G - F. 1. GOHBERG(Tel Aviv, Israel) On a new class of infinite matrices.

J. GOTTLIEB (Karlsruhe, Germany) Measures in differential equations, eigenvalue problems and Krein spaces.

E. GRINSHPUN (Beer Sheva, Israel) Asymptotic of spectra under weak nonselfadjoint perturbations. S. HASSI(Helsinki, Finland) On projections in a space with indefinite metric.

G. HEINIG (Leipzig, Germany) Generalized inversion of Toeplitz-like operators. J.W. HELToN(La Jolla, California, U.S.A.) Optimization over spaces of analytic functions and resulting problems III operator theory. J. HU(Hongkong) A general study of the radiation loss: asymptotics beyond all orders. C.R. JOHNsoN(Williamsburg, Virginia, U.S.A.) Matrix completion problems: recent advances. P. JONAs(Berlin, Germany) On selfadjoint extensions of nonnegative linear relations in Krein spaces. M.A. KAASHOEK(Amsterdam, The Netherlands) Two-sided Nudelman interpolation for input-output operators of time-varying systems. 311

W. KABALLO(Dortmund, Germany) Multiplicative decompositions of holomorphic Fredholm functions and 111*• algebras. V.E. KATSNELsoN(Tel Aviv, Israel) Weight approximation of pseudocontinuable functions by rational functions with prescribed poles. B. KIRSTEIN (Leipzig, Germany) On Arov-singular interpolation Problems. J. Kos(Amsterdam, The Netherlands) The Nehari-Takagi problem for input-output operators of time-varying con• tinuous time systems. A. KOZHEVNIKov(Haifa, Israel) General elliptic systems and some questions regarding their spectral theory. N. KRUPNIK(Ramat-gan, Israel) Extension theorems for Fredholm symbols. P. LANcAsTER(Calgary, Canada) Bounded operators and operator polynomials with real spectrum. H.-J. LINDEN(Hagen, Germany) On the trace of certain rational and meromorphic operator functions of a general type.

S.A.M. MARCANTOGNINI(Caracas, Venezuela) Commuting unitary Hilbert space extensions of a pair of Krein space isome• tries.

A.S. MARKus(Beer Sheva, brael) Factorization of a selfadjoint nonanalytic operator-valued function. V.I. MATsAEv(Tel-Aviv, Israel) A property of the Hilbert transform.

R. MENNICKEN (Regensburg, Germany) Non-standard boundary eigenvalue problems. A. MINGARELLI(Ottawa, Ontario, Canada) A class of maps in an algebra with indefinite metric and applications.

M. MOLLER(Johannesburg, South Africa) Orthogonal systems of root functions for symmetric operators. B. NAJMAN(Zagreb, Croatia) Regularity of the elliptic eigenvalue problems with indefinite weights. T. NAKAZI(Sapporo, Japan) (A2) condition and Carleson inequalities in Bergman spaces. 312

A.A. NUDELMAN(Odessa, Ukraine} Canonical solutions of the matrix Hamburger and Stieltjes moment problems. A. OCTAvIo(Miami, Florida, U.S.A.) Some problems in the theory of dual algebras generated by commuting con• tractions. V.V. PELLER(St. Petersburg, Russia} Superoptimal Hco approximations of matrix functions. M. RAKOWSKI(Columbus, Ohio, U.S.A.) Rational matrix functions with co-isometric values on the line or circle. A.C.M. RAN(Amsterdam, The Netherlands} Pseudo-canonical factorization in certain classes of matrix functions. L. RODMAN(Williamsburg, Virginia, U.S.A.) Inertia of operator polynomials. C.S. SADOSKY(Washington D.C., U.S.A.) Nehari and Nevanlinna-Pick theorems in the polydisc. L.A. SAKHNOVIcH(Odessa, Ukraine} Spectral problems and nonlinear equations. N. SALINAs(Lawrence, Kansas, U.S.A.) The canonical complex structure of flag manifolds in a C* -algebra. K. SEDDIGHI(Shivaz, Iran} Two parameter asymptotic spectra in the uniformly ellliptic case. A.A. SHKALIKOV(Moscow, Russia} Factorization theorems for selfadjoint operator pencils and their applications.

H.S.V. DE SNOo(Groningen, The Netherlands} On the sum of two Q-functions. S. STEPIN(Moscow, Russia} Rayleigh equation: scattering problem and eigenfunction expansions. I. Sucw(Bucarest, Rumania} A class of examples of operator valued positive definite functions. F. SZAFRANIEc(Cracow, Polen} Yet another face of the creation operator. D. TEMME(Amsterdam, The Netherlands} Dissipative matrices and invariant maximal semidefinite subspaces. P. THIJSSE(Rotterdam, The Netherlands} Symmetry relations for partial mulitiplicities of products of matrix functions. S. TREIL(East Lansing, Michigan, U.S.A.) On superoptimal approximations by analytic and meromorphic functions. 313

CR. TRETTER(Regensburg, Germany) The Kamke problem - properties of the eigenfunctions. K. VEsELIc(Hagen, Germany) On the condition of J-orthonormal eigenvectors. V. VINNIKOv(Rehovot, Israel) Functional models for commuting nonselfadjoint operators and realization of functions on a compact Riemann surface. R. VONRoFF(Dortmund, Germany) On a class of regular quasi-left definite boundary eigenvalue problems. H. WINKLER(Vienna, Austria) On the inverse spectral problem for canonical systems. H. WOERDEMAN(Williamsburg, Virginia, U.S.A.) The Agler boundary and linear extreme points of the numerical radius unit ball. H. WORAcEK(Vienna, Austria) Degenerated Nevanlinna-Pick problem and solutions with poles. J. ZEMANEK(Warsaw, Poland) Iterates of operators and the spectrum. N. ZORBOSKA(Winnipeg, Manitoba, Canada) Composition operators and the determining function. R. ZUIDWIJK(Rotierdam, The Netherlands) Simultaneous triangular forms for pairs of operators. Titles previously published in tht' series

OPERATOR THEORY: ADVANCES AND APPLICATIONS BIRKHAuSER VERLAG

Edited by I. Gohberg. School of Mathematical Sciences, Tel-Aviv University, Ramat Aviv, Israel

This series is devoted to the publication of current research in operator theory, with particular emphasis on applications to classical analysis and the theory of integral equations, as well as to numerical analysis, mathematical physics and mathematical methods in electrical engineering.

30. Vu.1. lyubich: Introduction to the Theory of Banach Representations of Groups, 1988, (3-7643-2207-1) 31. E.M. Polishchuk: Continual Means and Boundary Value Problems in Function Spaces, 1988, (3-7643-2217-9) 32. I. Gohberg (Ed.): Topics in Operator Theory. Constantin Apostol Memorial Issue, 1988, (3-7643-2232-2) 33. I. Gohberg (Ed.): Topics in Interplation Theory of Rational Matrix-Valued Functions, 1988, (3-7643-2233-0) 34. I. Gohberg (Ed.): Orthogonal Matrix-Valued Polynomials and Applications, 1988, (3-7643-2242-X) 35. I. Gohberg. J.W. Helton. l. Rodman (Eds.): Contributions to Operator Theory and its Applications, 1988, (3-7643-2221-7) 36. G.R. Belitskii. Vu.l. lyubich: Matrix Norms and their Applications, 1988, (3-7643-2220-9) 37. K. Schmudgen: Unbounded Operator Algebras and Representation Theory, 1990, (3-7643-2321-3) 38. l. Rodman: An Introduction to Operator Polynomials, 1989, (3-7643-2324-8) 39. M. Martin. M. Putinar: Lectures on Hyponormal Operators, 1989, (3-7643-2329-9) 40. H. Dym. S. Goldberg. P. lancaster. M.A. Kaashoek (Eds.): The Gohberg Anniversary Collection, Volume I, 1989, (3-7643-2307-8) 41. H. Dym. S. Goldberg. P. lancaster. M.A. Kaashoek (Eds.): The Gohberg Anniversary Collection, Volume II, 1989, (3-7643-2308-6) 42. N.K. Nikolskii (Ed.): Toeplitz Operators and Spectral Function Theory, 1989, (3-7643-2344-2) 43. H. Helson. B. Sz.-Nagy. F.-H. Vasilescu. Gr. Arsene (Eds.): Linear Operators in Function Spaces, 1990, (3-7643-2343-4) 44. C. Foias, A. Frazho: The Commutant Lifting Approach to Interpolation Problems, 1990, (3-7643-2461-9) 45. J.A. Ball, I. Gohberg, L. Rodman: Interpolation of Rational Matrix Functions, 1990, (3-7643-2476-7) 46. P. Exner, H. Neidhardt (Eds.): Order, Disorder and Chaos in Quantum Systems, 1990, (3-7643-2492-9) 47. I. Gohberg (Ed.): Extension and Interpolation of Linear Operators and Matrix Functions, 1990, (3-7643-2530-5) 48. L. de Branges, I. Gohberg, J. Rovnyak (Eds.): Topics in Operator Theory. Ernst D. Hellinger Memorial Volume, 1990, (3-7643-2532-1) 49. I. Gohberg, S. Goldberg, M.A. Kaashoek: Classes of Linear Operators, Volume I, 1990, (3-7643-2531-3) 50. H. Bart, I. Gohberg, M.A. Kaashoek (Eds.): Topics in Matrix and Operator Theory, 1991, (3-7643-2570-4) 51. W. Greenberg, J. Polewczak (Eds.): Modern Mathematical Methods in Transport Theory, 1991, (3-7643-2571-2) 52. S. Prossdorf, B. Silbermann: Numerical Analysis for Integral and Related Operator Equations, 1991, (3-7643-2620-4) 53. I. Gohberg, N. Krupnik: One-Dimensional Linear Singular Integral Equations, Volume I, Introduction, 1992, (3-7643-2584-4) 54. I. Gohberg, N. Krupnik: One-Dimensional Linear Singular Integral Equations, Volume II, General Theory and Applications, 1992, (3-7643-2796-0) 55. R.R. Akhmerov, M.1. Kamenskii, A.S. Potapov, A.E. Rodkina, B.N. Sadovskii: Measures of Noncompactness and Condensing Operators, 1992, (3-7643-2716-2) 56. I. Gohberg (Ed.): Time-Variant Systems and Interpolation, 1992, (3-7643-2738-3) 57. M. Demuth, B. Gramsch, B.W. Schulze (Eds.): Operator Calculus and Spectral Theory, 1992, (3-7643-2792-8) 58. I. Gohberg (Ed.): Continuous and Discrete Fourier Transforms, Extension Problems and Wiener-Hopf Equations, 1992, (3-7643-2809-6) 59. T. Ando, I. Gohberg (Eds.): Operator Theory and Complex Analysis, 1992, (3-7643-2824-X) 60. P.A. Kuchment: Floquet Theory for Partial Differential Equations, 1993, (3-7643-2901-7) 61. A. Gheondea, D. Timotin, F.-H. Vasilescu (Eds.): Operator Extensions, Interpolation of Functions and Related Topics, 1993, (3-7643-2902-5) 62. T. Furuta, I. Gohberg, T. Nakazi (Eds.): Contributions to Operator Theory and its Applications. The Tsuyoshi Ando Anniversary Volume, 1993, (3-7643-2928-9) 63. I. Gohberg, S. Goldberg, M.A. Kaashoek: Classes of Linear Operators, Volume 2, 1993, (3-7643-2944-0) 64. I. Gohberg (Ed.): New Aspects in Interpolation and Completion Theories, 1993, (3-7643-2948-3) 65. M.M. Djrbashian: Harmonic Analysis and Boundary Value Probiems in the Complex Domain, 1993, (3-7643-2855-X) 66. V. Khatskevich, D. Shoiykhet: Differentiable Operators and Nonlinear Equations, 1993, (3-7643-2929-7) 67. N.V. Govorov t: Riemann's Boundary Problem with Infinite Index, 1994, (3-7643-2999-8) 68. A. Halanay, V. lonescu: Time-Varying Discrete Linear Systems Input-Output Operators. Riccati Equations. Disturbance Attenuation, 1994, (3-7643-5012-1) 69. A. Ashyralyev, P.E. Sobolevskii: Well-Posed ness of Parabolic Difference Equations, 1994. (3-7643-5024-5) 70. M. Demuth, P. Exner, G. Neidhardt, V. Zagrebnov (Eds): Mathematical Results in Quantum Mechanics. International Conference in Blossin (Germany), May 17-21, 1993, 1994, (3-7643-5025-3) 71. E.L. Basor, I. Gohberg (Eds): Toeplitz Operators and Related Topics. The Harold Widom Anniversary Volume. Workshop on Toeplitz and Wiener-Hopf Operators, Santa Cruz, California, September 20-22, 1992, 1994 (3-7643-5068-7) 72. I. Gohberg, L.A. Sakhnovich (Eds): Matrix and Operator Valued Functions. The Vladimir Petrovich Potapov Memorial Volume, (3-7643-5091-1) 73. A. Feintuch, I. Gohberg (Eds): Nonselfadjoint Operators and Related Topics. Workshop on Operator Theory and Its Applications, Beersheva, February 24-28, 1994, (3-7643-5097 -0) 74. R. Hagen, S. Roch, B. Silbermann: Spectral Theory of Approximation Methods for Convolution Equations, 1994, (3-7643-5112-8) 75. C.B. Huijsmans, M.A. Kaashoek, B. de Pagter: Operator Theory in Function Spaces and Banach Lattices. The A.c. Zaanen Anniversary Volume, 1994 (ISBN 3-7643-5146-2) 76. A.M. Krasnosellskii: Asymptotics of Nonlinearities and Operator Equations, 1995, (ISBN 3-7643-5175-6) 77. J. Lindenstrauss, V.D. Milman (Eds): Geometric Aspects of Functional Analysis Israel Seminar GAFA 1992-94, 1995, (ISBN 3-7643-5207-8) 78. M. Demuth, B.-W. Schulze (Eds): Partial Differential Operators and Mathematical Physics: International Conference in Holzhau (Germany), July 3-9, 1994, 1995, (ISBN 3-7643-5208-6) 79. I. Gohberg, M.A. Kaashoek, F. van Schagen: Partially Specified Matrices and Operators: Classification, Completion, Applications, 1995, (ISBN 3-7643-5259-0)