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Volume 16, Number 1
2 International Journal "Information Theories & Applications" Vol.16 / 2009 International Journal INFORMATION THEORIES & APPLICATIONS Volume 16 / 2009, Number 1 Editor in chief: Krassimir Markov (Bulgaria) International Editorial Staff Chairman: Victor Gladun (Ukraine) Adil Timofeev (Russia) Ilia Mitov (Bulgaria) Aleksey Voloshin (Ukraine) Juan Castellanos (Spain) Alexander Eremeev (Russia) Koen Vanhoof (Belgium) Alexander Kleshchev (Russia) Levon Aslanyan (Armenia) Alexander Palagin (Ukraine) Luis F. de Mingo (Spain) Alfredo Milani (Italy) Nikolay Zagoruiko (Russia) Anatoliy Krissilov (Ukraine) Peter Stanchev (Bulgaria) Anatoliy Shevchenko (Ukraine) Rumyana Kirkova (Bulgaria) Arkadij Zakrevskij (Belarus) Stefan Dodunekov (Bulgaria) Avram Eskenazi (Bulgaria) Tatyana Gavrilova (Russia) Boris Fedunov (Russia) Vasil Sgurev (Bulgaria) Constantine Gaindric (Moldavia) Vitaliy Lozovskiy (Ukraine) Eugenia Velikova-Bandova (Bulgaria) Vitaliy Velichko (Ukraine) Galina Rybina (Russia) Vladimir Donchenko (Ukraine) Gennady Lbov (Russia) Vladimir Jotsov (Bulgaria) Georgi Gluhchev (Bulgaria) Vladimir Lovitskii (GB) IJ ITA is official publisher of the scientific papers of the members of the ITHEA® International Scientific Society IJ ITA welcomes scientific papers connected with any information theory or its application. IJ ITA rules for preparing the manuscripts are compulsory. The rules for the papers for IJ ITA as well as the subscription fees are given on www.ithea.org . The camera-ready copy of the paper should be received by http://ij.ithea.org. Responsibility for papers published in IJ ITA belongs to authors. General Sponsor of IJ ITA is the Consortium FOI Bulgaria (www.foibg.com). International Journal “INFORMATION THEORIES & APPLICATIONS” Vol.16, Number 1, 2009 Printed in Bulgaria Edited by the Institute of Information Theories and Applications FOI ITHEA®, Bulgaria, in collaboration with the V.M.Glushkov Institute of Cybernetics of NAS, Ukraine, and the Institute of Mathematics and Informatics, BAS, Bulgaria. -
Cameron E. Freer
Cameron E. Freer 955 Massachusetts Ave. #256 email: [email protected] Cambridge, MA 02139-3233 www: http://cfreer.org/ USA phone: +1-716-713-8228 EMPLOYMENT Massachusetts Institute of Technology (ACADEMIA) Research Scientist, Department of Brain and Cognitive Sciences. 2019 – Present Research scientist in the Probabilistic Computing Project. Postdoctoral Associate, Department of Brain and Cognitive Sciences. 2013 – 2015 Research postdoc. Postdoctoral mentors: Joshua B. Tenenbaum and Vikash K. Mansinghka Postdoctoral Fellow, Computer Science and Artificial Intelligence Laboratory. 2011 – 2013 Research postdoc. Postdoctoral mentors: Joshua B. Tenenbaum and Leslie P.Kaelbling Instructor in Pure Mathematics, Department of Mathematics. 2008 – 2010 Research and teaching postdoc. Postdoctoral mentors: Hartley Rogers, Jr. and Michael Sipser University of Hawai‘i at Manoa¯ Junior Researcher, Department of Mathematics. 2010 – 2011 Research and teaching postdoc. Postdoctoral mentor: Bjørn Kjos-Hanssen EMPLOYMENT Borelian Corporation (INDUSTRY) Founder and Chief Scientist. 2016 – Present Remine Chief Scientist. 2017 – 2018 Gamalon Labs Research Scientist. 2013 – 2016 Analog Devices Lyric Labs Visiting Fellow. 2013 – 2014 Hibernia Atlantic Advisory Board Member. 2011 – 2012 EDUCATION Harvard University Ph.D. in Mathematics, 2008. Dissertation: Models with high Scott rank. Advisor: Gerald E. Sacks University of Chicago S.B. in Mathematics with Honors, 2003. Last updated: November 2020 Cameron E. Freer 2 RESEARCH INTERESTS Interactions of randomness and computation, including the foundations of probabilistic comput- ing, efficient samplers and testing methods for probabilistic inference, and the mathematics of random structures. PUBLICATIONS N. L. Ackerman, C. E. Freer, and R. Patel, On computable aspects of algebraic and definable closure, Journal of Logic and Computation, to appear. F. A. -
CURRICULUM VITAE Contact Department of Mathematics
CURRICULUM VITAE DAMIR D. DZHAFAROV Contact Department of Mathematics University of Connecticut 341 Mansfield Road Storrs, Connecticut 06269-1009 U.S.A. Telephone: +1 860-486-3120 E-mail: [email protected] Homepage: damir.math.uconn.edu Personal Date of birth: February 2, 1983. Place of birth: Prague, Czech Republic. Citizenships: Czech Republic, United States. Research interests Mathematical logic and foundations, specifically computability theory, reverse math- ematics, effective combinatorics, computable analysis, and interactions of logic with philosophy and cognitive science. Employment Regular positions. Associate Professor of Mathematics, University of Connecticut, 2019–present. Affiliate Associate Professor of Philosophy, University of Connecticut, 2019–present. Assistant Professor of Mathematics, University of Connecticut, 2013–2019. NSF Postdoctoral Fellow, University of California, Berkeley, 2012–2013. NSF Visiting Assistant Professor, University of Notre Dame, 2011–2012. Visiting positions. Fulbright Research Scholar, Charles University, Prgue, 2020–2021. Visiting Scholar, Institute Henri Poincare, Paris, February 2020. Visiting Instructor, University of Chicago, Summer 2019. Visiting Postdoctoral Fellow, National University of Singapore, Summer 2011. 1 2 DAMIR D. DZHAFAROV Education Ph.D. in Mathematics, University of Chicago, June 2011. (Advisors: Robert I. Soare, Denis R. Hirschfeldt, Antonio Montalb´an.) M.S. in Mathematics, University of Chicago, June 2006. B.S. in Mathematics, Purdue University, May 2005. Professional memberships 1. American Mathematical Society. 2. Jednota ˇcesky´ch matematik˚u a fyzik˚u. 3. Association for Symbolic Logic. 4. Association for Computability in Europe. 5. University of Connecticut Logic Group. 6. Connecticut Institute for Brain and Cognitive Science. Grants and awards 1. U.S. Fulbright Scholar, 2020–2021. 2. NSF Focused Research Group Grant DMS-1854355 (PI, 379 450 USD), 2019– 2022. -
Query-Optimal Oracle Turing Machines for Type-2 Computations
Computability in Europe 2008 Logic and Theory of Algorithms University of Athens June 15-20, 2008 Title: Query-Optimal Oracle Turing Machines for Type-2 Com- putations Abstract: With the notion of optimal programs de¯ned in terms of Blum's complex- ity measure, the well known speed-up theorem states that there exist com- putable functions that do not have optimal programs. For type-2 compu- tation, we argue that the same speed-up theorem can be obtained as long as the complexity measure satis¯es Blum's complexity measure under the Oracle Turing Machine model. In the present paper, we consider the oracle query as a dynamic complexity measure. Since the query complexity is not a Blum's complexity measure, we have to characterize the notions of optimal programs in a very di®erent way. We give three notions of query-optimal programs in di®erent strength and argue that the stronger the notion of query-optimal programs we de¯ne, the more di±cult to have query-optimal programs. In other words, with a stronger de¯nition of query-optimal pro- grams, one can prove an easier version of the speed-up theorem. Keywords: Type-2 Complexity Theory, Type-2 Computation, Query Optimal Pro- grams, Speed-up Theorems Author: Chung-Chih Li, Ph.D. School of Information Technology Assistant Professor P.O. Box 5150 Old Union Illinois State University Normal, IL 61790, USA Tel: +1-309-438-7952 Fax: +1-309-438-5113 e-mail: [email protected] Query-Optimal Oracle Turing Machines for Type-2 Computations Chung-Chih Li School of Information Technology Illinois State University Normal, IL 61790, USA Abstract. -
Association Computability in Europe Annual General Meeting Turku, Finland 15 June 2017, 17H15-18H00
Association Computability in Europe Annual General Meeting Turku, Finland 15 June 2017, 17h15-18h00 Participants: - Arnold Beckmann - Paola Bonizonni - Olivier Bournez - Vasco Brattka - Liesbeth De Mol - Gianluca Della Vedova - Benedikt Loewe - Florin Manea - Barnab Martin - !laus Meer - Russel Miller - #hierry Monteil - $abrina Ouazzani - Chansa Park - Arno Paul - Giuse&&e Primiero - 'icole $chewilkardt - Ale(andra $oskova - )ol*er #hies - Peter Vam +mde Boas - Moshe Vardi - Richard ,h man Giuseppe Primiero (GP) opens the meeting and recalls the agenda sent by email. 1. Opening. Deciding who will chair the meeting. 2. Reports 2.1 The President (Paola Bonizzoni) 2.2 The Secretary (Giuseppe Primiero) 2.3 The Conference Series SC-chair (Florin Manea) 2.4 The Treasurer (Dag Norman) 2.5 Publications (Computability, Book Series) (Vasco Brattka) 3. Election of six members of the Council. 4. Administration 4.1 CiE has been registered in Italy on April 18th, 2017 4.2 Bank account opened in May 2017 5. New Activities 5.1 Support for Research Proposals 5.2 Support for education and research activities [-] CiE Lecture days, started in Milan on April 18th 5.3 Barry Cooper Prize 6. AoB 1- Opening. GP asks if there is any objection about the idea that he will chair the AGM. As no objection is raised, GP chairs the meeting. GP declares that unless there is an objection, Dag Normann will be nominated as the treasurer. GP invites Paola Bonizonni (PB) to report as President. 2- Reports 2.1) Report from the President The constitution of the association has been registered at the notary. This allowed the association to open a bank account. -
Computability and Complexity in Analysis Schloß Dagstuhl, November 11–16, 2001
Dagstuhl-Seminar 01461 on Computability and Complexity in Analysis Schloß Dagstuhl, November 11–16, 2001 Organizers: Vasco Brattka (Hagen), Peter Hertling (Hagen), Mariko Yasugi (Kyoto), Ning Zhong (Cincinnati). Preface This meeting was the third Dagstuhl seminar which was concerned with the theory of computability and complexity over the real numbers. This theory, which is built on the Turing machine model, was initiated by Turing, Grzegorczyk, Lacombe, Banach and Mazur, and has seen a rapid growth in recent years. Recent monographs are by Pour- El/Richards, Ko, and Weihrauch. Computability theory and complexity theory are two central areas of research in the- oretical computer science. Until recently, most work in these areas concentrated on prob- lems over discrete structures. In the last years, though, there has been an enormous growth of computability theory and complexity theory over the real numbers and other continuous structures. One of the reasons for this phenomenon is that more and more practical computation problems over the real numbers are being dealt with by computer scientists, for example, in computational geometry, in the modelling of dynamical and hybrid systems, but also in classical problems from numerical mathematics. The scien- tists working on these questions come from different fields, such as theoretical computer science, domain theory, logic, constructive mathematics, computer arithmetic, numerical mathematics, analysis etc. This Dagstuhl seminar provided a unique opportunity for 46 participants from such diverse areas and 12 different countries to meet and exchange ideas and knowledge. One of the topics of interest was foundational work concerning the various models and approaches for defining or describing computability and complexity over the real numbers. -
Curriculum Vitae
Roussanka Loukanova Curriculum Vitae Roussanka Loukanova September 30, 2021 Contents I CV R´esum´e3 1 Education and Degrees3 2 Academic Qualification4 3 Pedagogic Training4 4 Employment and Association4 4.1 Present...........................................4 4.2 Former Positions......................................4 4.3 Visiting Positions and Fellowships............................5 II Scientific Profile6 5 Expertise 6 6 Experience with Software Packages7 III Pedagogic Profile7 7 Experience in Teaching7 7.1 Courses Taught and Developed..............................8 8 Experience as a Supervisor9 8.1 Supervision of Bachelor and Master's Theses......................9 8.2 Supervision of Ph.D. Students...............................9 8.3 Participation in Evaluation Committees of M.Sc. and Ph.D. Theses.........9 9 Training in Teaching and Learning in Higher Education9 10 Some Pedagogical Work and Teaching Materials 10 IV Grants 10 V Scholarly Activities 13 1 / 27 Roussanka Loukanova 11 Scientific Organizations, Committees 13 11.1 Organization Committees................................. 13 11.2 Reviewing and Member of Program Committees.................... 15 11.2.1 Area Supervisory Committee........................... 15 11.2.2 Program Committees............................... 15 12 Other International Engagements 16 12.1 Tutorials........................................... 16 12.2 Some Conference and Seminar Participation, Talks, Presentations........... 16 VI Scientific Works 18 13 Work in Progress 18 14 List of Publications 19 14.1 Publications -
Beyond the Horizon of Computability
Lecture Notes in Computer Science 12098 Founding Editors Gerhard Goos Karlsruhe Institute of Technology, Karlsruhe, Germany Juris Hartmanis Cornell University, Ithaca, NY, USA Editorial Board Members Elisa Bertino Purdue University, West Lafayette, IN, USA Wen Gao Peking University, Beijing, China Bernhard Steffen TU Dortmund University, Dortmund, Germany Gerhard Woeginger RWTH Aachen, Aachen, Germany Moti Yung Columbia University, New York, NY, USA More information about this series at http://www.springer.com/series/7407 Marcella Anselmo • Gianluca Della Vedova • Florin Manea • Arno Pauly (Eds.) Beyond the Horizon of Computability 16th Conference on Computability in Europe, CiE 2020 Fisciano, Italy, June 29 – July 3, 2020 Proceedings 123 Editors Marcella Anselmo Gianluca Della Vedova University of Salerno University of Milano-Bicocca Fisciano, Italy Milan, Italy Florin Manea Arno Pauly University of Göttingen Swansea University Göttingen, Germany Swansea, UK ISSN 0302-9743 ISSN 1611-3349 (electronic) Lecture Notes in Computer Science ISBN 978-3-030-51465-5 ISBN 978-3-030-51466-2 (eBook) https://doi.org/10.1007/978-3-030-51466-2 LNCS Sublibrary: SL1 – Theoretical Computer Science and General Issues © Springer Nature Switzerland AG 2020, corrected publication 2021 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. -
Association Computability in Europe Annual General Meeting Paris, France 30 June 2016, 5Pm-6Pm
Association Computability in Europe Annual General Meeting Paris, France 30 June 2016, 5pm-6pm Participants: - Arrighi Pablo (Université d’Aix-Marseille, France) - Beckmann Arnold (Swansea University, Wales/UK) - Begs Edwin (Swansea, Wales/UK) - Bienvenu Laurent (CNRS & Montpellier University, France) - Bonizzoni Paola (Milan, Italy) - Bournez Olivier (Ecole Polytechnique, France) - Brattka Vasco (Universität der Bundeswehr München (Germany) & Univ. Cape Town (South-Africa)) - Carbone Alessandra (Université Pierre et Marie Curie, France) - Chazelle Bernard (Princeton University, USA) - Czeizler Eugen (Abo Akademi, Finland) - De Mol Liesbeth (CNRS – STL University of Lille 3, France) - Dimitrov Rumen (WIU, USA) - Guillon Pierre (CNRS & Université d’Aix-Marseille, France) - Jonoska Natasha (University of South Florida, USA) - Kristiansen Lars (Oslo, Norway) - Li Yu (Mis, Université de Picardie Jules Vernes, France) - Löwe Benedikt (Universiteit van Amsterdam, The Netherlands & Universität Hamburg, Germany) - Martin Barnaby (Middlesex University, UK) - Mayordomo Elvira (University Zaragoza, Spain) - Miller Russell (City University of New York, USA) - Normann Dag (University of Oslo, Norway) - Pauly Arno (Université Libre de Bruxelles, Belgium) - Pégny Maël (CNRS, Université de Paris, France) - Petre Jon (Turku, Finland) - Petrakis Iosif (University of Munich, Germany) - Primiero Giuseppe (Middlesex University London, UK) - Stephan Frank (Singapore) - Soskova Alexandra (Sofia University, Bulgaria) - Soskova Mariya (Sofia University, Bulgaria) - Verlan Sergey (Paris, France) - Visser Albert (Ultrecht) - Ziegler Martin (Kaist, Rep. Korea) President Dag Normann (DN) opens the meeting, It is decided that Benedikt Löwe (BL) will chair the AGM and that Olivier Bournez (OB) will take the minutes of the AGM. BL recalls the agenda transmitted by email to members of the association on 22 June 2016. 1) Opening 2) Reports a. -
Lecture Notes in Computer Science 9136
Lecture Notes in Computer Science 9136 Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen Editorial Board David Hutchison Lancaster University, Lancaster, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Friedemann Mattern ETH Zurich, Zürich, Switzerland John C. Mitchell Stanford University, Stanford, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen TU Dortmund University, Dortmund, Germany Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Gerhard Weikum Max Planck Institute for Informatics, Saarbrücken, Germany More information about this series at http://www.springer.com/series/7407 Arnold Beckmann • Victor Mitrana Mariya Soskova (Eds.) Evolving Computability 11th Conference on Computability in Europe, CiE 2015 Bucharest, Romania, June 29 – July 3, 2015 Proceedings 123 Editors Arnold Beckmann Mariya Soskova Department of Computer Science Sofia University Swansea University Sofia Swansea Bulgaria UK Victor Mitrana University of Bucharest Bucharest Romania ISSN 0302-9743 ISSN 1611-3349 (electronic) Lecture Notes in Computer Science ISBN 978-3-319-20027-9 ISBN 978-3-319-20028-6 (eBook) DOI 10.1007/978-3-319-20028-6 Library of Congress Control Number: 2015940742 LNCS Sublibrary: SL1 – Theoretical -
Dagrep V008 I009 P001 18361.Pdf (7
Report from Dagstuhl Seminar 18361 Measuring the Complexity of Computational Content: From Combinatorial Problems to Analysis Edited by Vasco Brattka1, Damir D. Dzhafarov2, Alberto Marcone3, and Arno Pauly4 1 Universität der Bundeswehr – München, DE, [email protected] 2 University of Connecticut – Storrs, US, [email protected] 3 University of Udine, IT, [email protected] 4 Swansea University, GB, [email protected] Abstract This report documents the program and the outcomes of Dagstuhl Seminar 18361 “Measuring the Complexity of Computational Content: From Combinatorial Problems to Analysis”. It includes abstracts of talks presented during the seminar and open problems that were discussed, as well as a bibliography on Weihrauch complexity that was started during the previous meeting (Dagstuhl seminar 15392) and that saw some significant growth in the meantime. The session “Solved problems” is dedicated to the solutions to some of the open questions raised in the previous meeting (Dagstuhl seminar 15392). Seminar September 2–7, 2018 – http://www.dagstuhl.de/18361 2012 ACM Subject Classification Theory of computation → Models of computation, Theory of computation → Complexity classes, Mathematics of computing → Numerical analysis, Theory of computation → Logic Keywords and phrases Computability and complexity in analysis, computations on real num- bers, reducibilities, descriptive complexity, computational complexity, reverse and construct- ive mathematics Digital Object Identifier 10.4230/DagRep.8.9.1 Edited in cooperation with Marta Fiori Carones 1 Executive Summary Vasco Brattka (Universität der Bundeswehr – München, DE) Damir D. Dzhafarov (University of Connecticut, US) Alberto Marcone (University of Udine, IT) Arno Pauly (Swansea University, GB) License Creative Commons BY 3.0 Unported license © Vasco Brattka, Damir D. -
Barbara F. Csima
BARBARA F. CSIMA University of Waterloo Department of Pure Mathematics Waterloo, ON N2L 3G1 Canada 1-519-888-4567 ext. 37596 e-mail: [email protected] homepage: www.math.uwaterloo.ca/~csima CITIZENSHIP: Canadian EDUCATION: Ph.D., Mathematics, University of Chicago, 2003. M.S., Mathematics, University of Chicago, 1999. Hon.B.Sc., Mathematics Specialist and Actuarial Science Major, University of Toronto, 1998. DISSERTATION: Title: Applications of Computability Theory to Prime Models and Differential Geometry Advisor: Robert I. Soare EMPLOYMENT: Professor of Pure Mathematics, University of Waterloo, Jul. 2015 { present. Associate Professor of Pure Mathematics, University of Waterloo, Jul. 2010 { Jun. 2015. Assistant Professor of Pure Mathematics, University of Waterloo, Jul. 2005 { Jun. 2010. H. C. Wang Assistant Professor of Mathematics, Cornell University, Jul. 2003 { Jun. 2005. PUBLICATIONS AND PREPRINTS: [25] B. F. Csima and J. Stephenson, Finite Computable Dimension and Degrees of Categoricity, submitted. [24] B. A. Anderson, B. F. Csima, and K. M. Lange, Bounded Low and High Sets, Archive for Mathematical Logic, accepted. [23] B. F. Csima and M. Harrison-Trainor, Degrees of Categoricity on a Cone Via η-systems, J. Symbolic Logic, 82 (2017), no. 1, 325-346. [22] B. A. Anderson and B. F. Csima, Degrees that are not degrees of categoricity, Notre Dame J. of Formal Logic, 57 (2016), no. 3, 389{398. [21] B. F. Csima and C. Knoll, Measuring Complexities of Classes of Structures, Annals of Pure and Applied Logic 166 (2015), pp. 1365{1381. [20] B. A. Anderson and B.F. Csima, A bounded jump for the bounded Turing degrees, Notre Dame J.