**Subject**:**[Fwd: OP-SF Net Volume 6 Number 6]****From**:**Daniel Lozier <dlozier@nist.gov>**- Date: Wed, 24 Nov 1999 14:15:14 -0500
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-------- Original Message -------- Subject: OP-SF Net Volume 6 Number 6 Date: Tue, 16 Nov 1999 09:41:17 -0500 (EST) From: mailer@siam.org o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o - - - November 15, 1999 - - - - O P - S F N E T Volume 6, Number 6 - - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - - Editor: - - Martin Muldoon muldoon@yorku.ca - - - - The Electronic News Net of the SIAM Activity Group - - on Orthogonal Polynomials and Special Functions - - - - Please send contributions to: poly@siam.org - - Subscribe by mailing to: poly-request@siam.org - - or to: listproc@nist.gov _ - _ o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o Today's Topics 1. From the Editor 2. Third Workshop on Orthogonal Polynomials, Approximation and Harmonic Analysis 3. Laredo Summer School 4. Berkeley Workshop on Computational Algebraic Analysis 5. San Diego Symposium on Asymptotics and Applied Analysis 6. New Book on Grobner Deformations of Hypergeometric Differential Equations 7. W.T. and Idalia Reid Prize 8. Call for Nominations: SIAG/LA Prize 9. Acknowledgment from B. Anicin 10. OP-SF preprints in xxx archive 11. Changes of Address, WWW Pages, etc 12. Subscribing to OP-SF NET 13. Obtaining back issues of OP-SF NET and submitting contributions to OP-SF NET and Newsletter Calendar of Events: 2000 January 5-7: Workshop on Computational Algebraic Analysis Berkeley, California, USA 6.4 #5, 6.6 #4 January 10-14: Symposium on Asymptotics and Applied Analysis San Diego, California, USA 6.4 #6, 6.6 #5 March 27-31: Workshop on Quantum Groups, Morelia, Mexico 6.5 #3 April 14-18: Workshop on Orthogonal Polynomials, Approximation and Harmonic Analysis, Inzell, Germany 6.6 #2 May 17-20: Symposium on Trends in Approximation Theory, Nashville, Tennessee, USA 6.5 #4 May 29 - June 9: Special Functions 2000: Current Perspective and Future Directions, Tempe, Arizona, USA 6.5 #2 July 3-7: Alhambra 2000, a Joint Mathematical European-Arabic Conference 6.4 #7 July 10-14: SIAM Annual Meeting in Puerto Rico See: http://www.siam.org/meetings/an00/index.htm July 17-22: I Colloquium on Lie Theory and Applications, Vigo, Spain 6.4 #8 July 24-29: Summer School "Orthogonal Polynomials and Special Functions", Laredo, Spain. 6.6 #3 August 14-18: International Symposium on Applied Mathematics, Dalian, China 6.5 #5 Topic #1 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET editor <muldoon@yorku.ca> Subject: From the Editor OPSFA-Patras, the International Symposium on Orthogonal Polynomials, Special Functions and Their Applications was held in Patras, Greece, on September 20-24, 1999. The local organizers, including Evangelos Ifantis, Chrysoula Kokologiannaki and Panos Siafarikas, did a tremendous in welcoming the large attendance with a memorable scientific and social programme. Our next issue will feature fuller reports on the Symposium from a few of those attending. At the panel discussion during the Hong Kong Workshop (Special Functions: Asymptotics, Harmonic Analysis, and Mathematical Physics) in June, there was a proposal that the SIAM activity group might provide coordination for the future planning of meetings on orthogonal polynomials and special functions. Of course we already have a list (above) of meetings actually planned. But often there is a considerable lapse of time between when a meeting is at first contemplated and an actual formal announcement can be made. If you are planning to organize a workshop, summer school, conference, special session, etc., we suggest that you inform one of the officers of the SIAM activity group. Please contact the local organizers in case of conflict or for finding a solution for possible overlap. The SIAM activity group will not be involved in the actual organization. In this spirit, it was announced in Patras that the next meeting in the European series on Orthogonal Polynomials (the sequence which included meetings in Bar-le-Duc, Erice, Sevilla, Patras and other places) will be held in Italy in 2001. The contact person is Andrea Laforgia (laforgia@dma.uniroma3.it). As already mentioned in OP-SF NET 6.5, the next meeting in the series Fields-Toronto (1995) - CRM-Montreal (1996) - Mount Holyoke (1998) - Hong Kong (1999) - Arizona (2000) is expected to be held in the Netherlands in 2002 and to be organized by Tom Koornwinder (thk@uwa.wins.nl), Nico Temme (nico@cwi.nl) and Erik Koelink (koelink@twi.tudelft.nl). Topic #2 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Third Workshop on Orthogonal Polynomials, Approximation and Harmonic Analysis [This information is form the web site: http://www.gsf.de/institute/ibb/prestin/work3.html] Third Workshop Orthogonal Polynomials Approximation and Harmonic Analysis Inzell April 14-18, 2000 (Friday - Tuesday) The third Workshop on Orthogonal Polynomials will focus on approximation theoretic methods and the relationship to harmonic analysis. The Workshop will take place at Inzell located in the Alps southeast of Munich. More informations will be available soon. Organizing Committee: S. Ehrich, F. Filbir, R. Girgensohn, R. Lasser, J. Obermaier, J. Prestin Mailing Address: Dr. J. Prestin Institute for Biomathematics and Biometry der GSF - National Research Center for Environment and Health D-85764 Neuherberg, Germany e-mail: prestin@gsf.de Topic #3 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: Paco Marcellan <pacomarc@ing.uc3m.es> Subject: Laredo Summer School The following (with slight corrections) is from the web site: http://merlin.us.es/~renato/laredo/ SUMMER SCHOOL ON ORTHOGONAL POLYNOMIALS AND SPECIAL FUNCTIONS "SIAG OP-SF Summer School" 2000 (Preliminary Announcement) Laredo, Spain, July 24-29, 2000 The SIAM Activity Group (SIAG) on Orthogonal Polynomials and Special Functions intends to organize a series of summer schools starting next year. The first such meeting will take place in Laredo, Spain. Laredo is a "small" village located on the Cantabrian coast of Spain (on the Atlantic near Santander). There is a domestic airport in Santander but there are also train and bus connections from Madrid. From the point of view of tourism, Laredo is very well known because of the most wonderful and longest beach in the North of Spain. The goal of the Summer School is to give 5 introductory courses in advanced research topics on Orthogonal Polynomials and Special Functions. Some free discussions as well as some informal seminars will also be available. The expected audience are graduate and recent postgraduate students (around 25 people who will receive grants for their living expenses and accommodation) and active researchers (around 35 people). The topics to be considered will be: Spectral Theory Matrix Orthogonal Polynomials Wavelets Multivariable Orthogonal Polynomials Asymptotic Analysis There will be 5 plenary mini-courses. The titles can be found below. Also there will be special sessions where the participants will have the opportunity to give short research seminars and/or posters, as well as a panel discussion. Because the small number of these seminars we kindly ask the participants who want to present their own results to send us (by e-mail), as soon as possible, an abstract (no more that one page). Priority will be given to those talks are closely related to the main subjects of the school. Information about registration, registration fee, etc., will be appear in a later announcement. Invited speakers and mini-courses - A. J. Duran (Universidad de Sevilla, Spain) "Matrix Orthogonal Polynomials" - H. T. Koelink (Technische Universiteit Delft, The Netherlands) "Spectral Theory and Special Functions" - K. T.-R. McLaughlin (University of Arizona, USA) "Asymptotic Analysis of Riemann-Hilbert Problems and Orthogonal Polynomials" - J. Prestin (Institute of Biomathematics and Biometry, Neuherberg, Germany) "Polynomial Wavelets'' - J. Stokman (Centre de Mathematiques de Jussieu, Universite Pierre et Marie Curie, Paris, France) "Multivariable Orthogonal Polynomials associated with non-reduced affine root systems" The Organizing Committee is: R. Alvarez-Nodarse (Univ de Sevilla, Spain), F. Marcellan (Univ. Carlos III, Spain) W. Van Assche (Katholieke Universiteit Leuven, Belgium) R. Yanez (Univ. de Granada, Spain) To get more information please contact: Renato Alvarez-Nodarse <ran@cica.es> or Francisco Marcellan <pacomarc@ing.uc3m.es> Topic #4 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Berkeley Workshop on Computational Algebraic Analysis In OP-SF NET 6.4, Topic #5, there was an announcement of the Workshop on Computational Algebraic Analysis to be held in Berkeley, California, USA, January 5-7, 2000. The complete program of talks is now available at the Workshop web site: http://msri.org/activities/events/9900/caa/ Topic #5 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: San Diego Symposium on Asymptotics and Applied Analysis The Symposium was announced in OP-SF NET 6.4, Topic #6. The following more up-to-date information is taken from the Symposium web site http://www.sci.sdsu.edu/math_cs/asymptotics2000 SAN DIEGO SYMPOSIUM ON ASYMPTOTICS AND APPLIED ANALYSIS January 10 - 14, 2000 Organizers: T. M. Dunster and D. A. Lutz Department of Mathematical and Computer Sciences San Diego State University San Diego, CA 92182-7720 U.S.A email: dunster@math.sdsu.edu or lutz@math.sdsu.edu This symposium will consist of talks in the following three categories of asymptotics and applied analysis: difference equations, ordinary differential equations, and functions defined by integrals. The first of these would emphasize representations for solutions in large sectors and asymptotic methods involving special functions. Included in the second and third categories would be new results related to exponentially-improved asymptotics and hyperasymptotics, summation of divergent solutions, connection problems, error analysis, and applications to special functions. In all of the above three areas physical applications would be covered under the scope of the symposium: for example new results in wave physics (where asymptotics describes the high-frequency limit and separation of variables leads to ordinary differential equations with a large parameter), and tunneling in quantum mechanics (where asymptotics of certain special functions could be used in the determination of exponentially small widths of energy bands in one-dimensional potentials). The following have agreed to participate as principal speakers:: F. W. J. Olver (Maryland), R. Askey (Wisconsin), W. Balser (Ulm, Germany), C. Bender (St. Louis), M. Berry (Bristol, UK), B. Braaksma (Netherlands), F. Pham (Nice, France), R. Schaefke (Strasbourg, France), Y. Sibuya (Minneapolis), N. Temme (Netherlands), and R. Wong (Hong Kong). Each will give a 50 minute talk focusing on significant, new developments. In addition, there will be a series of shorter 30 minutes talks from other participants. Post-doctoral and graduate students, and especially those from under-represented groups, are encouraged to attend. The web site also includes a registration form, a form for submitting abstracts, an SDSU location map, travel information for San Diego and accommodation information. Topic #6 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: Bernd Sturmfels <bernd@math.berkeley.edu> Subject: New Book on Grobner Deformations of Hypergeometric Differential Equations The following information is taken from the web site http://www.springer.de/cgi-bin/search_book.pl?isbn=3-540-66065-8 Grobner Deformations of Hypergeometric Differential Equations Saito, M., Hokkaido University, Sapporo, Japan Sturmfels, B., University of California, Berkeley, CA, USA Takayama, N., University of Kobe, Japan 1999. VIII, 254 pp. 14 figs. ISBN: 3-540-66065-8 Publication date: November 18, 1999 DM 69,- Recommended List Price Fields: Differential, Difference and Integral Equations; Symbolic Computation, Computer Algebra; Algebraic Geometry Written for: Researchers and graduate students in mathematics Book category: Graduate Textbook In recent years, new algorithms for dealing with rings of differential operators have been discovered and implemented. A main tool is the theory of Grobner bases, which is reexamined here from the point of view of geometric deformations. Perturbation techniques have a long tradition in analysis; Grobner deformations of left ideals in the Weyl algebra are the algebraic analogue to classical perturbation techniques. The algorithmic methods introduced here are particularly useful for studying the systems of multidimensional hypergeometric PDEs introduced by Gelfand, Kapranov and Zelevinsky. The Grobner deformation of these GKZ hypergeometric systems reduces problems concerning hypergeometric functions to questions about commutative monomial ideals, and leads to an unexpected interplay between analysis and combinatorics. This book contains a number of original research results on holonomic systems and hypergeometric functions, and raises many open problems for future research in this area. Keywords: hypergeometric functions, Grobner bases, holonomic systems, Weyl algebra, combinatorial commutative algebra Contents: Chapter 1. Basic Notions.- Chapter 2. Grobner Deformations of Regular Holonomic Systems.- Chapter 3. Hypergeometric Series.- Chapter 4. Rank versus volume.- Chapter 5. Integration of D-modules Series: Algorithms and Computation in Mathematics. VOL. 6 Topic #7 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: Allison Bogardo <bogardo@siam.org> Subject: W.T. and Idalia Reid Prize CALL FOR NOMINATIONS for W. T. AND IDALIA REID PRIZE The Reid Prize -------------- SIAM will present the W.T. and Idalia Reid Prize at the 2000 SIAM Annual Meeting at the Westin Rio Mar Beach Resort in Puerto Rico next July 10-14. The award will be given for research in, or other contributions to, the broadly defined areas of differential equations and control theory. The prize may be given either for a single notable achievement or for a collection of such achievements. Eligibility ----------- The prize is awarded to any member of the scientific community who meets the general guidelines of the prize description above. Description of Award -------------------- The award consists of an engraved medal and a $10,000 cash prize, plus travel expenses to attend the prize ceremony. Nominations ----------- A letter of nomination, including a description of achievement(s) should be sent by February 1, 2000 to: Professor John A. Burns Chair, Reid Prize Selection Committee c/o A. G. Bogardo SIAM 3600 University City Science Center Philadelphia, PA 19104-2688 Telephone: (215) 382-9800 Fax: (215) 386-7999 E-mail: bogardo@siam.org Selection Committee ------------------- Members of the selection committee are John A. Burns, Chair (Virginia Institute of Technology and State University); H. Thomas Banks (North Carolina State University); James G. Glimm (State University of New York at Stony Brook); John Guckenheimer (Cornell University); and Arthur J. Krener (University of California, Davis). Topic #8 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: Allison Bogardo <bogardo@siam.org> Subject: Call for Nominations: SIAG/LA Prize CALL FOR NOMINATIONS for SIAM ACTIVITY GROUP ON LINEAR ALGEBRA PRIZE The SIAG/LA Prize ----------------- The SIAM Activity Group on Linear Algebra will present the award at its Seventh SIAM Conference on Applied Linear Algebra at North Carolina State University in October 2000. The prize, the fifth to be given, is awarded to the author(s) of the most outstanding paper on a topic in applicable linear algebra published in a peer-reviewed journal. Eligibility ----------- Candidate papers must be published in English in a peer-reviewed journal bearing a publication date between January 1, 1997 through December 31, 1999. The papers must contain significant research contributions to the field of linear algebra, as commonly defined in the mathematical literature, with direct or potential applications. Nominations should include a full bibliographic citation for the paper and a brief statement outlining the justification for the nomination in terms of its importance and impact. Authors are discouraged from nominating their own papers. Description of Award -------------------- The award consists of a plaque and a certificate containing the citation. Nominations ----------- Nominations including a copy of the nominated paper should be sent by March 15, 2000 to: Professor Volker Mehrmann Chair, SIAG/LA Prize Selection Committee c/o A. G. Bogardo SIAM 3600 University City Science Center Philadelphia, PA 19104 Telephone: 215-382-9800 Fax: 215-386-7999 E-mail: bogardo@siam.org Selection Committee ------------------- The members of the selection committee for the award are Volker Mehrmann (TU Chemnitz), chair; Uwe Helmke (University of Wuerzburg); Daniel Hershkowitz (Technion Haifa); Nicholas Higham (University of Manchester); and Zdenek Strakos (Emory University). Topic #9 ------------ OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Acknowledgment from B. Anicin B. A. Anicin, Circuit theory of video display lines, IEE Proc.- Micro. Antennas Propag, vol. 146, no. 1, February 1999, pp. 65-69, acknowledges the help of Professors J. Boersma and M. L. Glasser with certain integral relations which arose in the study in question. Questions concerning these integrals were posed by Anicin in OP-SF NET 5.1. Topic #10 ----------- OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: OP-SF preprints in xxx archive The following preprints related to the field of orthogonal polynomials and special functions were recently posted or cross-listed to one of the subcategories of the xxx archives. See: http://front.math.ucdavis.edu/math.CA http://front.math.ucdavis.edu/math.CO http://front.math.ucdavis.edu/math.QA http://xxx.lanl.gov/archive/solv-int E-print math.AG/9911030 Title: Rational Hypergeometric Functions Authors: Eduardo Cattani, Alicia Dickenstein, Bernd Sturmfels Categories: AG Algebraic Geometry (CO Combinatorics) Report number: MSRI 1999-051 Comments: LaTeX, 26 pages Abstract: Multivariate hypergeometric functions associated with toric varieties were introduced by Gel'fand, Kapranov and Zelevinsky. Singularities of such functions are discriminants, that is, divisors projectively dual to torus orbit closures. We show that most of these potential denominators never appear in rational hypergeometric functions. We conjecture that the denominator of any rational hypergeometric function is a product of resultants, that is, a product of special discriminants arising from Cayley configurations. This conjecture is proved for toric hypersurfaces and for toric varieties of dimension at most three. Toric residues are applied to show that every toric resultant appears in the denominator of some rational hypergeometric function. From: Eduardo Cattani <cattani@math.umass.edu> E-print math.CA/9910128 Title: Riccati equations and convolution formulas for functions of Rayleigh type Authors: Dharma P. Gupta, Martin E. Muldoon Categories: CA Classical Analysis Math Subject Class: 33C10 Abstract: N. Kishore, Proc. Amer. Math. Soc. 14 (1963), 523, considered the Rayleigh functions sigma_n, sums of the negative even powers of the (non-zero) zeros of the Bessel function J_nu(z) and provided a convolution type sum formula for finding sigma_n in terms of sigma_1, ...,sigma_{n-1}. His main tool was the recurrence relation for Bessel functions. Here we extend this result to a larger class of functions by using Riccati differential equations. We get new results for the zeros of certain combinations of Bessel functions and their first and second derivatives as well as recovering some results of Buchholz for zeros of confluent hypergeometric functions. From: Martin E. Muldoon <muldoon@yorku.ca> E-print math.CA/9910045 Title: Special Values of Multiple Polylogarithms Authors: Jonathan M. Borwein, David M. Bradley, David J. Broadhurst, Petr Lisonek Categories: CA Classical Analysis (CO Combinatorics) Math Subject Class: 40B05; 33E20 Comments: 35 pages Abstract: Historically, the polylogarithm has attracted specialists and non-specialists alike with its lovely evaluations. Much the same can be said for Euler sums (or multiple harmonic sums), which, within the past decade, have arisen in combinatorics, knot theory and high-energy physics. More recently, we have been forced to consider multidimensional extensions encompassing the classical polylogarithm, Euler sums, and the Riemann zeta function. Here, we provide a general framework within which previously isolated results can now be properly understood. Applying the theory developed herein, we prove several previously conjectured evaluations, including an intriguing conjecture of Don Zagier. From: David M. Bradley <bradley@gauss.umemat.maine.edu> E-print math.CA/9909162 Title: Asymptotic Series for Some Painleve VI Solutions Author: V. L. Vereschagin Categories: CA Classical Analysis (AG Algebraic Geometry) Comments: 11 pages, LaTeX Abstract: The paper concerns asymptotic studies for the sixth Painleve transcendent as independent variable tends to infinity. The primary tool is averaging and the Whitham method. Elliptic ansatz, appropriate modulation equation and asymptotics for some partial solution to PVI are found. From: Vadim Vereschagin <vadim@mail.icc.ru> E-print math.CO/9910096 Title: Combinatorics of geometrically distributed random variables: New q-tangent and q-secant numbers Author: Helmut Prodinger Categories: CO Combinatorics Math Subject Class: 05A15 Comments: If you want to see more of my papers, go here: http://www.wits.ac.za/helmut/paperlst.htm Abstract: Up-down permutations are counted by tangent resp. secant numbers. Considering words instead, where the letters are produced by independent geometric distributions, there are several ways of introducing this concept; in the limit they all coincide with the classical version. In this way, we get some new q-tangent and q-secant functions. Some of them also have nice continued fraction expansions; in one particular case, we could not find a proof for it. Divisibility results a la Andrews/Foata/Gessel are also discussed. From: Helmut Prodinger <helmut@cam.wits.ac.za> E-print math.CO/9909053 Title: Change of base in Bailey pairs Authors: David Bressoud, Mourad Ismail, Dennis Stanton Categories: CO Combinatorics (NT Number Theory) Math Subject Class: 05A17; 11P81; 17B68 Abstract: Versions of Bailey's lemma which change the base from q to q^2 or q^3 are given. Iterates of these versions give many new versions of multisum Rogers-Ramanujan identities. We also prove Melzer's conjectures for the Fermionic forms of the supersymmetric analogues of Virasoro characters. From: David M. Bressoud <bressoud@macalester.edu> E-print math.QA/9909044 Title: A generalization of the q-Saalschutz sum and the Burge transform Authors: A. Schilling, S. O. Warnaar Categories: QA Quantum Algebra (CO Combinatorics) Math Subject Class: 33D15; 05A30; 05A10 Report number: ITFA-99-24 Comments: 18 pages, AMSLaTeX Abstract: A generalization of the q-(Pfaff)-Saalschutz summation formula is proved. This implies a generalization of the Burge transform, resulting in an additional dimension of the ``Burge tree''. Limiting cases of our summation formula imply the (higher-level) Bailey lemma, provide a new decomposition of the q-multinomial coefficients, and can be used to prove the Lepowsky and Primc formula for the A_1^{(1)} string functions. From: S. Ole Warnaar <warnaar@wins.uva.nl> solv-int/9909022 From: Igor Loutsenko <loutseni@feynman.princeton.edu> Self-similarity in Spectral Problems and q-special Functions Authors: I. Loutsenko, V. Spiridonov Similarity symmetries of the factorization chains for one-dimensional differential and finite-difference Schr\"odinger equations are discussed. Properties of the potentials defined by self-similar reductions of these chains are reviewed. In particular, their algebraic structure, relations to $q$-special functions, infinite soliton systems, supersymmetry, coherent states, orthogonal polynomials, one-dimensional Ising chains and random matrices are outlined. Topic #11 ----------- OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Changes of Address, WWW Pages, etc Alessandro Di Bucchianico writes: Please note that as of September 1, I moved from the mathematics department to the technology management faculty of Eindhoven University of Technology. My new address is given below (including my new email address and web pages). My phone numbers have not changed. A. Di Bucchianico, Eindhoven University of Technology, Faculty Technology Management, section Quality of Products & Processes, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, phone +31 40 247 2902/8109, fax +31 40 2467497, URL: http://www.tm.tue.nl/vakgr/ppk/bucchianico.htm Anne Schilling is now at MIT as a C. L. E. Moore instructor. Her coordinates are: Building 2, room 279 Department of Mathematics Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge, MA 02139 U.S.A. e-mail: anne@math.mit.edu Phone: (617) 253-3214 Fax: (617) 253-4358 homepage: http://www-math.mit.edu/~anne/ Dr. Semyon Yakubovich (Technische Universiteit Eindhoven, Nederland) has been appointed as a Visiting Associate Professor at the University of Porto (Portugal) starting February 2000. His address will be Departamento de Matematica Pura Faculdade de Ciencias Universidade do Porto Praca a gomes Teixeira 4099-002 Porto Portugal Mama Foupouagnigni completed his PhD (on Orthogonal polynomials, co-supervised by Professor Andre Ronveaux) on December 16, 1998. Now he is back in Cameroon, in a permanent position at the Yaounde Higher Teachers Training College (an Institute of the University of Yaounde I). His address is: Docteur Mama FOUPOUAGNIGNI Universite de Yaounde I Ecole Normale Superieure Departement de Mathematiques BP 47 Yaounde, Republique du Cameroun Tel/Fax: (237) 22 49 34 email: foupoua@uycdc.uninet.cm Andrei Martinez Finkelshtein has a home page at http://www.ualm.es/~andrei/prof-en.html Topic #12 ----------- OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Subscribing to OP-SF NET There are two ways to subscribe to OP-SF NET: 1. Send a message to poly-request@siam.org with your name and email address in the body of the message. If everything works well, you will be put on the mailing list of OP-SF NET which is maintained by SIAM. 2. Send a message to listproc@nist.gov and put in the body of the message the single line: subscribe opsfnet xxxxx where in place of xxxxx you put your name. This is handled by an automatic list server. You will receive a confirmation, with a list of further commands. You will be put on the opsfnet mailing list of this list server. A new issue of OP-SF NET will be mailed to people on this list immediately after the mailing by SIAM to the people on SIAM's list. To cancel your subscription, send "unsubscribe opsfnet" to the same address. In case of any trouble with mailings of OP-SF Net, send a message to dlozier@nist.gov. Topic #13 ----------- OP-SF NET 6.6 ----------- November 15, 1999 ~~~~~~~~~~~~~ From: OP-SF NET Editor <muldoon@yorku.ca> Subject: Obtaining back issues of OP-SF NET and submitting contributions to OP-SF NET and Newsletter Back issues of OP-SF NET can be obtained from WWW: http://turing.wins.uva.nl/~thk/opsfnet/ or WWW: http://www.math.ohio-state.edu/JAT/DATA/OPSFNET/opsfnet.html Contributions to the OP-SF NET 7.1 should reach the email address poly@siam.org before January 1, 2000. The Activity Group also sponsors a (printed) Newsletter edited by Renato Alvarez-Nodarse and Rafael Yanez. The deadline for submissions to be included in the February 2000 issue is January 15, 2000 and for the June 2000 issue it is May 15, 2000. Please send your Newsletter contributions directly to the Editors: Renato Alvarez-Nodarse Departamento de Analisis Matematico Universidad de Sevilla Apdo. Postal 1160, Sevilla E-41080 Spain fax: +34-95-455-7972 e-mail: renato@gandalf.ugr.es ran@cica.es Rafael J. Yanez Departamento de Matematica Aplicada Universidad de Granada E-18071 Granada, Spain phone: +34-58-242941 fax: +34-58-242862 e-mail: ryanez@ugr.es preferably by email, and in latex format. Other formats are also acceptable and can be submitted by email, regular mail or fax. Please note that submissions to the Newsletter (if not containing mathematics symbols or pictures) are automatically considered for publication in OP-SF NET, and vice versa, unless the writer requests otherwise. Previous issues of the Newsletter, but not the most recent one, can be obtained as dvi or PostScript files from Wolfram Koepf's WWW homepage: http://www.imn.htwk-leipzig.de/~koepf/siam.html In order to join the SIAM Activity Group on Orthogonal Polynomials and Special Functions, and thereby receive the Newsletter, you have to become a member of SIAM. The annual dues are $93 for SIAM plus $10 for the Group. Student memberships are $20 a year with free membership in one Activity Group. Postgraduates can join for $45 a year (for three years). Contact the email address join@siam.org o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o - OP-SF NET is a forum of the SIAM Activity Group on - - Special Functions and Orthogonal Polynomials. - - We disseminate your contributions on anything of interest to the - - special functions and orthogonal polynomials community. This - - includes announcements of conferences, forthcoming books, new - - software, electronic archives, research questions, job openings. - o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o - Send submissions to: poly@siam.org - - Subscribe by mailing to: poly-request@siam.org - - or to: listproc@nist.gov - - Get back issues from URL: http://turing.wins.uva.nl/~thk/opsfnet/ - - WWW home page of this Activity Group: - - http://www.math.yorku.ca/siamopsf/ - - Information on joining SIAM - - and this activity group: service@siam.org - o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o - The elected Officers of the Activity Group (1999-2001) are: - - Daniel W. Lozier, Chair - - Walter Van Assche, Vice Chair - - Charles F. Dunkl, Secretary - - Francisco Marcellan, Program Director - - The appointed officers are: - - Renato Alvarez-Nodarse and Rafael J. Yanez, - - Newsletter Editors - - Martin Muldoon, Webmaster and OP-SF NET editor - o - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - o

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