OP-SF Net Volume 6 Number 3 May 15, 1999



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-                                                 May 15, 1999        -
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-      O P - S F   N E T                    Volume 6, Number 3        -
-      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~        -
-      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:  majordomo@wins.uva.nl        -
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Today's Topics
     1. Passages
     2. Report on Atlanta
     3. 1999 IMACS-ACA (Spain)
     4. Workshop on Symbolic and Numerical Scientific Computation (Linz)
     5. Hong Kong Workshop on Minimal Energy Problems 
     6. Benin Workshop on Contemporary Problems in Mathematical Physics
     7. Question on Orthogonal polynomials with order-dependent argument
     8. Lecture Notes on Orthogonal Polynomials and Random Matrices
     9. opsftalk listserv taken over by Dan Lozier
    10. From the SIAM President
    11. OP-SF preprints in xxx archive
    12. Changes of Address, WWW Pages, etc.
    13. Subscribing to OP-SF NET
    14. Obtaining back issues of OP-SF NET and submitting contributions   
        to OP-SF NET and Newsletter


Calendar of Events:

1999
June 6-11: International Conference on Rational Approximation, 
      Antwerp, Belgium                                      5.5 #3 6.2 #7
June 21-25: International Workshop on Special Functions: Asymptotics,
     Harmonic Analysis, and Mathematical Physics, Hong Kong 
                                                            5.4 #5 6.1 #5
June 24-27: 1999 IMACS-ACA, El Escorial, Spain                     6.3 #3
July 5-9: ICIAM '99, Edinburgh                                     5.5 #4
                  (Minisymposium on asymptotics 5.6 #5)
August 9-13: MAA Seminar "Calculus and Counting", Duluth, MN, USA  6.2 #8
August 9-14: Gyorgy Alexits Memorial Conference, Budapest
              Hungary                                              6.1 #8
August 13-20, 1999: Third International Workshop "Transform Methods &
          Special Functions, Blagoevgrad, Bulgaria                 6.2 #5
August 18-20: Workshop on Symbolic and Numerical Scientific 
           Computation, Linz, Austria                              6.3 #4
September 14-18:  International Conference on Analytic Methods of
         Analysis and Differential Equations, Minsk, Belarus       5.6 #6
September 20-24: International Symposium on Orthogonal Polynomials,
     Special Functions and Their Applications, Patras, 
     Greece                                               5.4 #3   6.1 #8
October 31 - November 7: Benin Workshop on Contemporary 
     Problems in Mathematical Physics                              6.3 #6
November 8-12: Hong Kong Workshop on Minimal Energy Problems       6.3 #5

2000
July 10-14: SIAM Annual Meeting in Puerto Rico
 


Topic #1    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                             ~~~~~~~~~~~~~
From: Editor, OP-SF NET <muldoon@yorku.ca>
Subject: Passages

The week of April 19 brought the sad news of the unexpected death of
Gian-Carlo Rota, one of the most colourful and original mathematicians of
the past half-century and one whose work touched several areas of interest
to members of our Group. See the obituary notice at
http://web.mit.edu/newsoffice/nr/1999/rota.html

A few days later, we were delighted by the news that Richard Askey has
been elected to membership in the U.S. National Academy of Sciences.  For
many years, Dick Askey has been very much at the centre of activity in
Orthogonal Polynomials and Special Functions and has been a great friend
and supporter of our Group's activities. Congratulations, Dick! 



Topic #2       ------------- OP-SF NET 6.3 ------------- May 15, 1999
                             ~~~~~~~~~~~~~
From: Charles F. Dunkl <cfd5z@virginia.edu>
Subject: Report on Atlanta

The 1999 SIAM Annual Meeting was held at the Sheraton Atlanta Hotel, May
12-15, in Atlanta, Georgia. As part of the meeting Jeffrey Geronimo of
Georgia Tech organized a minisymposium on "Orthogonal Polynomials: Theory
and Applications". There were seven talks in two sessions. Thursday (May
13), Jeff Geronimo started the program and lectured about multiwavelets
and multiresolution analysis; some of the results were joint work with G. 
Donovan and D. Hardin. Then Percy Deift of the Courant Institute discussed
asymptotics for orthogonal polynomials whose weight function was of the
type exp(-Q(x)), Q being a polynomial of even degree, by means of the
Riemann-Hilbert method. T. Kriecherbauer, K. McLaughlin, S. Venakides and
X.  Zhou had collaborated with Deift on this work. Walter van Assche of
Leuven (who is vice-chair of the Activity Group) talked on multiple
orthogonal polynomials (that is, orthogonal for two different weights)
associated to modified Bessel functions of the second kind. 

Friday (May 14) there were four talks; your reporter discussed examples of
Calogero-Moser systems and orthogonal polynomials with hyperoctahedral
(Weyl groups of type B) symmetry, and the problems involved in trying to
construct complete orthogonal bases of the associated spherical harmonics.. 
Sergei Suslov of Arizona State University talked about a novel type of
Fourier series associated to q-analogues of sine and cosine (some of this
was joint work with J. Bustoz and W. Gosper). H. Woerdeman of the College
of William and Mary talked on joint work with Geronimo about expressing a
positive trigonometric polynomial of two variables as the squared absolute
value of another polynomial, in connection with autoregressive filters.
Gerard Teschl of Vienna concluded the program with his lecture on inverse
spectral theory of Jacobi operators; the information about the operator
which is contained in the support of the spectral measure. 
  
Dan Lozier (chair of the A.G.) participated in the Poster Session, with an
update on the Handbook project at NIST (National Institute for Science and
Technology). Bruce Fabijonas, also of NIST, talked in a Contributed Papers
session about numerical calculation of modified Bessel functions (software
which could become part of the Handbook accessories).

As often happens at large annual meetings of scientific societies, the
attendance at a parallel session was disappointingly small; it ranged from
12 to 20 at the O.P. minisymposium. One notes there were twelve parallel
minisymposia Thursday afternoon. 

The invited lecture by Herbert Wilf on asymptotic oscillations and binary
partitions of integers certainly was of interest to the special functions
people, notably the asymptotics and combinatorics experts.

The Friday evening pool side reception organized by Dan Lozier provided
good conversation and collegiality, but unfortunately reflected the low
level of attendance at the minisymposium.

Saturday the activity group officers  (named above) met to discuss plans.
One point worth making here: the OP-SF NET and the printed Newsletter are
an excellent way of promulgating information about upcoming conferences,
and we urge the world-wide community of OP&SF people to use these news
media for both announcing conferences and planning programs to avoid
scheduling conflicts.

Charles F. Dunkl
Secretary SIAG/OS



Topic #3       ------------- OP-SF NET 6.3 ------------- May 15, 1999
                             ~~~~~~~~~~~~~
From: Renato Alvarez-Nodarse
Subject: 1999 IMACS-ACA

1999 IMACS Conference on Applications of Computer
Algebra, El Escorial, Spain, June 24-27, 1999

The following information has been taken from the WWW site
http://math.unm.edu/ACA/1999.html}. 
Further and detailed information can be obtained in the same site. 

Computer Algebra or Symbolic Computing is a young field of research in
between Computing and Mathematics.  Merging the two ways of thinking (one
theoretical and the other closer to the real world) provides a fertile
soil for the growth of new useful and exciting applications. Although the
same kind of tools are in the background, a broad variety of fields are
covered, as the sessions organized at IMACS-ACA '98 show: Robotics, High
Energy Physics, Industry, Algebra and Geometry, Artificial Intelligence,
Education, Biology, ... 

This will be the 5th IMACS-ACA. Previous ones have taken place in
Albuquerque, New Mexico (USA) 1995; Linz (Austria) 1996; Wailea, Maui,
Hawaii (USA) 1997 and Prague (Czech Republic) 1998. The evolution of the
number of talks and attendees indicate a rapidly increasing interest in
this particular conference.

Probably the two most important conferences about Computer Algebra
nowadays are the much older ISSAC and IMACS-ACA. IMACS-ACA is getting
nearly as many attendees as ISSAC. Moreover, as far as we know, IMACS-ACA
is the only conference in the world specifically devoted to applications
of this field. 

In previous years organizations and companies as important as the U.S.
National Science Foundation (NSF) and National Security Agency (NSA),
Czech Ministry of Education, Texas Instruments, Wolfram Research, etc.
have sponsored this conference.



Topic #4       ------------- OP-SF NET 6.3 ------------- May 15, 1999
                             ~~~~~~~~~~~~~
From: OP-SF NET Editor <muldoon@yorku.ca>
Subject: Workshop on Symbolic and Numerical Scientific Computation

[The following information is from the web site:
http://www.risc.uni-linz.ac.at/conferences/summer99/snsc99.html]

                               Workshop on
                 Symbolic and Numerical Scientific Computation
                                (SNSC'99)
                                              
                   Johannes Kepler Universitšt Linz, Austria
                            August 18 - 20, 1999

SNSC'99 is an open workshop of the SFB (special research initiative) 
"Numerical and Symbolic Scientific Computation". The goal of this workshop
is to further the integration of methods in symbolic and numerical
scientific computation. In addition to presentations by members of the
SFB, several invited speakers will explain their approach to the
integration of these two scientific fields. The following invited speakers
are already confirmed: C. Bajaj (Univ.  Texas at Austin, USA), K.O. Geddes
(Univ. Waterloo, Canada), V. Gerdt (JINR Dubna, Russia), E. Kaltofen
(North Carolina State Univ., USA), M. Lesser (Royal Inst. Techn., Sweden),
Wu W.D. (Beijing Mun.Computing Center, China), F. Ziegler (Techn. Univ.
Vienna, Austria). Participation in the workshop is not limited to members
of the SFB and invited speakers. Participants may present short talks at
the workshop.

Topics of presentations include: 

     multigrid methods for FEM 
     computer aided geometric design 
     computer supported derivation of mathematical knowledge 
     constraint solving 
     regularization techniques 
     combinatorics and special functions 
     qualitative analysis of differential equations 
     visualization in scientific computation 
     symbolic and numerical methods in engineering sciences 

Program Committee: 
  
          B. Buchberger
          H. Engl
          H. Irschik
          U. Langer
          R. Lerch
          E. Lindner
          P. Paule
          O. Scherzer
          J. Schicho
          J. Volkert
          F. Winkler (chairman)

In case you are interested to contribute a short presentation (18 min. + 2
min. discussion), send a one page abstract to:
snsc99@risc.uni-linz.ac.at

Deadline: April 30, 1999.  



Topic #5       ------------- OP-SF NET 6.3 ------------- May 15, 1999
                             ~~~~~~~~~~~~~
From: Arno Kuijlaars <Arno.KUIJLAARS@wis.kuleuven.ac.be>
Subject: Hong Kong Workshop on Minimal Energy Problems

   A workshop on Minimal Energy Problems will be held from November 8-12,
1999, at the City University of Hong Kong, as part of a series of
Foundations of Computational Mathematics workshops to be held this fall. 

   The meeting will emphasize research work related to distributing points
on a sphere and on general Riemann surfaces, discrepancy results (e.g. for
Fekete points), potential theoretic tools and applications to orthogonal
polynomials, random matrices, integrable systems, etc. 

    For further information, contact Ed Saff (esaff@math.usf.edu) 
or Arno Kuijlaars (arno@wis.kuleuven.ac.be), or consult the workshop
home page 
 http://www.math.usf.edu/FoCM99



Topic #6       ------------- OP-SF NET 6.3 ------------- May 15, 1999
                             ~~~~~~~~~~~~~
From: Andre Ronveaux <Andre.Ronveaux@fundp.ac.be>
Subject: Benin Workshop on Contemporary Problems in Mathematical Physics

A Workshop on Contemporary Problems in Mathematical Physics will take
place at The Institut de Mathematiques et de Sciences Physiques} (Cotonou,
Republique du Benin), from October 31st to November 7th, 1999. L'Institut
de Mathematiques et de Sciences Physiques (L'IMSP), as one of the Graduate
Schools of Universite Nationale de Benin, organizes a third Cycle in
Mathematics and Physics since 1989. L'IMSP was the first African
Institution initiated with the support of the Third World Academy of
Science, and affiliated in 1988 to the ICTP (International Center for
Theoretical Physics-Trieste, Italy) created by the late Nobel laureate
Abdus Salam. PhD students coming from many countries around Benin and
being bachelor in Mathematics or Physics, are selected every two years, in
order to start a DEA (Diplome d'Etudes Approfondies), followed by the
preparation during at least two more years of a PhD Dissertation in IMSP
and abroad (mainly Europe and North America).  One of the orientation,
inside Mathematical Physics covers the topic of "Special Functions and
Orthogonal Polynomials".

The main objective of the workshop is to contribute to the development of
a _critical_mass_ of researchers in Africa in such a dynamic area as
mathematical physics. The main _aim_ of the workshop is to bring together
specialists from diverse topics in Theoretical and Mathematical Physics.
It will offer to the international scientific community the possibility of
exchanging useful information on contemporary problems in these fields
through direct interaction.  The workshop will also provide young African
researchers with an opportunity to know each other and to initiate
scientific cooperation. Therefore, the workshop will help to strengthen
research capacity and revitalize activities in mathematical physics in
African universities. The workshop will include invited review talks and
contributed communications. The invited review talks will be presented in
plenary sessions whereas the contributed papers will be presented in three
working groups corresponding to the three main topics. 

Main topics:
1. Coherent States, Wavelets and Geometric Methods in Theoretical Physics
2. Quantum  Field Theory, Atomic and Molecular Physics
3. Operator Theory and Orthogonal Polynomials

The official languages of the workshop are English and French.

The activity is open to scientists from all countries. Travel and
subsistence expenses of the participants should be covered by the home
institution. However, limited funds will be made available for scientists
from African countries. Participants interested in presenting a paper are
encouraged to send a camera ready copy. The deadline for submission of
papers and/or of requests for financial support is July 15th, 1999.
Applications should be submitted to: 

Prof. M. N. Hounkonnou (Workshop in COPROMAPH)
Institut de Mathematiques et de Sciences Physiques
B. P. 613, Porto-Novo 
Republique du Benin 
Phone number: (00) 229 22 24 55
E-mail: hounkon@syfed.bj.refer.org

The local Organizing Committee is: 
Prof. M.  N.  Hounkonnou
Unite de Recherche en Physique
Institut de Mathematiques et de Sciences Physiques
Porto-Novo-Benin (E-mail: hounkon@syfed.bj.refer.org) 
and  
Prof. W.  A.  Lester, Department of Chemistry, 
University of California, Berkeley 
(E-mail: walester@cchem.berkeley.edu)

The Scientific Advisory Committee} is:  
S. T. Ali (Canada), J.P. Antoine (Belgium), A. Banyaga (USA), A. Bellemans
(Belgium), S. Belmehdi (France), X. Chapuisat (France),  J. M. Combes
(France), J. P. Gazeau (France), G. Ciccotti (Italy), C. S. Diatta
(Senegal),  J. P. Ezin (Benin), C. Goudjo (Benin), M. N. Hounkonnou
(Benin), R. Kerner (France),  W. Koepf (Germany), W. A. Lester (USA), M.
Mareschal (CECAM), A. Msezane (USA), R. Murenzi (USA), A. Ronveaux
(Belgium), J. P. Ryckaert (Belgium), J. Shabani  (UNESCO), B. Torresani
(France). 

               Application Form
WORKSHOP ON CONTEMPORARY PROBLEMS IN MATHEMATICAL 
PHYSICS (October  31st - November  7th, 1999)

Last name:______________________________________
First name(s):__________________________________
Nationality:____________________________________
Professional address:___________________________
________________________________________________ 
Phone,fax:______________________________________
E-mail:_________________________________________
Address for correspondence (if it is different 
from the above):________________________________
________________________________________________
Academic qualification:_________________________
Field of research interest:_____________________
Chosen working group at this workshop:__________
Accompanied by (specify):_______________________
Please check  the appropriate spot:
 - I can find funds for the expenses:
 - I am requesting financial support for:
        half travel:____________________________
        full travel:____________________________
        living expenses:________________________
I shall submit a paper:  Yes ___  No ___
Registration fees:
1. Participants from developed countries: US$150
2. Participants from developing countries: US$50
Date:___________________________________________
Signature:______________________________________



Topic #7    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                             ~~~~~~~~~~~~~
From: Vadim Zelenkov <zelenkov@isir.minsk.by>
Subject: Question on Orthogonal polynomials with order-dependent argument

[Editor's note: This has appeared on opsfnet and other listservs.]

Please answer Tom Hoovler, not Vadim Zelenkov! I only forward this
message!  V.Z. 

From: Tom Hoovler <bx238@freenet.buffalo.edu>
Subject: Orthogonal polynomials with order-dependent argument

Can anyone tell me if there is any literature on orthogonal polynomials of
order-dependent argument, i.e. a complete set of orthogonal polynomials
Pn(x,n).  In particular of the form Pn(nx), regarding such fundamental
concepts as generating functions, weights, Rodriguez formulas, etc. I am
interested in Hermites and Laguerres specifically, but any info anyone
could give me regarding this, I would be interested. 



Topic #8    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                             ~~~~~~~~~~~~~
From: Vadim Zelenkov <zelenkov@isir.minsk.by>
Subject: Lecture Notes on Orthogonal Polynomials and Random Matrices

[Editor's Note: This appeared on opsftalk; it was forwarded from the
newsgroup sci.math.research.]

Subject: Courant Institute Lecture Notes series

This is to advise newsgroup readers of the availability of the new
series published by the Courant Institute.
Numbers 1,2,3 are available now;  numbers 4 and 5 are forthcoming.

More details, and a secure server for orders can be viewed at
http://www.cims.nyu.edu/lecnotes
....

3 Orthogonal Polynomials and Random Matrices:  A Riemann-Hilbert Approach
Percy Deift
1999, 273 pp., $20, ISBN 0-9658703-2-4

These notes expand on a set of lectures at the Courant Institute in
1996-1997 on Riemann-Hilbert problems, orthogonal polynomials, and random
matrix theory. The main goal of the course was to prove universality for a
variety of statistical quantities arising in the theory of random matrix
models. The main ingredient in the proof is the steepest descent method
for oscillatory Riemann-Hilbert problems introduced earlier by the author
and Xin Zhou. 



Topic #9    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                             ~~~~~~~~~~~~~
From:    Tom Koornwinder <thk@wins.uva.nl>  
Subject: opsftalk listserv taken over by Dan Lozier  

Up to now the listserv opstalk has been supervised and moderated by me at
the University of Amsterdam via a majordomo program.  It is a service of
the SIAM Activity Group on Orthogonal Polynomials and Special Functions. 
>From now on this service will be continued by Dan Lozier (email
dlozier@nist.gov).  Dan has copied the present mailing list, so no action
by subscribers is required, unless they want to unsubscribe. 

All information about opsftalk can now be found in

http://math.nist.gov/opsftalk/

This information includes the following:

To subscribe to OPSF-Talk, send a message to listproc@nist.gov with 

subscribe opsftalk xxxxx 

on a single line in the message body, where in place of xxxxx you put
your name. To cancel your subscription, send "unsubscribe opsftalk" to
the same address.

You can post messages by sending mail to opsftalk@nist.gov. Your message
will be forwarded to the moderator, who will usually pass it to everybody
on the opsftalk list. It will also be added automatically to an archive.
You can see all opsftalk messages (going back to January 1998)  in

http://www.nist.gov/itl/div896/emaildir/opsftalk/maillist.html

The archive of postings to opsftalk at
http://www.findmail.com/listsaver/opsftalk/
will no longer be updated, and will probably soon be removed completely.

I am grateful to Dan that he is willing to continue this.  I think a
listserv like this can potentially be a valuable medium for providing and
getting information, posing questions and discussing topics which are of
immediate interest for our specialism.  To be honest, during the first 15
or 16 months of its existence, postings were not yet up to my
expectations.



Topic #10    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                              ~~~~~~~~~~~~~
From: OP-SF Editor <muldoon@yorku.ca>
Subject: From the SIAM President  

Tom Koornwinder reminds me that our activities have gotten a couple of
boosts from Gilbert Strang in his column "From the SIAM President" in SIAM
News. 

In the March 1999 issue, Gilbert writes:
"...In addition to its own conferences and workshops, SIAM joins with
others in sponsoring conferences around the world.  A good one on special
functions is coming soon (June 21-25; www.cityu.edu.hk/ma) in Hong Kong. 
I have a greater respect than ever for special functions after
recent work with Alan Edelman - who was counting paths in a graph. 
We were looking for the eigenvalues of the graph's adjacency matrix A, and
path counts gave the diagonal entries in the powers of A.
The numbers that cane out were 4, 28, 232, 2092, 19864, ... and we
couldn't see a pattern. In desperation we sent them to
superseeker@research.att.com (a miracle program created by Neil Sloane).
To my amazement, superseeker returned a third-order recurrence (quite
complicated).  Doubting the whole thing, I insisted on sending the next
ten numbers in the sequence.  The exact same recursion came back in nine
seconds (with a generating function too, just what we needed).  MATLAB
produced the numbers, Maple simplified the recursion and Mathematica
identified the solution as a Jacobi polynomial.  Is this really
mathematics?  At least we got the answer (a special function, of course
...."

In his April column, Professor Strang discusses (among other things)  the
importance of algorithms and later writes: 
"Our annual meeting in Atlanta includes a special minisymposium arranged
by the Activity Group on Orthogonal Polynomials and Special Functions
....with a strong program. You should contact poly-request@siam.org for
the mailings form this group. The whole subject of special functions is
important to SIAM - a complement (not orthogonal) to Algorithms. ..."

Thanks, Gilbert!



Topic #11    -------------    OP-SF NET 6.3   -------------  May 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

math.RT/9905045. Yu. A. Neretin. Matrix analogs of B-functions and
Plancherel formula for Berezin kernel representations. RT (CA DG MP).

math.CA/9904111. Erik Koelink, Jasper V. Stokman. The big q-Jacobi
function transform. 40 pages. CA (QA RT).

math.CA/9904061. Bruno Gauthier. A proof of Kummer's theorem. 10 pages.
CA.

math.CO/9903020. Michel Lassalle (CNRS,Paris). Une identite en theorie des
partitions. 20 pages. CO.

math.QA/9904173. D. Shklyarov, S. Sinel'shchikov, L. Vaksman. q-Analogue
of the Berezin quantization method. 9 pages. QA (FA MP).

math.QA/9903107. C. Dong, G. Mason. Transformation Laws for Theta
functions. 13 pages. QA.

solv-int/9903005 [abs, src, ps, other] :
    Title: The Pfaff lattice and skew-orthogonal polynomials
    Authors: M. Adler, E. Horozov, P. van Moerbeke
    Comments: 21 pages
    Journal-ref: Intern. Math. Research Notices, 1999 

solv-int/9903011 [abs, src, ps, other] :
    Title: Multipeakons and a theorem of Stieltjes
    Authors: R. Beals, D.H. Sattinger, J. Szmigielski
    Comments: 6 pages
    Journal-ref: Inverse Problems, volume 15 (1999), Letters, L1-L4 

solv-int/9903015 [abs, src, ps, other] :
    Title: On the Umemura Polynomials for the Painlev\'e III equation
    Authors: K. Kajiwara, T. Masuda (U. of Doshisha)
    Comments: 10 pages, LaTeX 2.09(Elsevier style), submitted to Phys.
            Lett. A 



Topic #12    -------------    OP-SF NET 6.3   -------------  May 15, 1999
                              ~~~~~~~~~~~~~
From: OP-SF NET Editor <muldoon@yorku.ca>
Subject: Changes of Address, WWW Pages, etc.

We welcome Juergen Prestin asa new member of the Group. He can be reached
at:
  Institute of Biomathematics and Biometry
  GSF - National Research Center for Environment and Health 
  85764 Neuherberg
  Germany
  email:  prestin@gsf.de

Jasper Stokman has his home page now at another URL:
http://www-irma.u-strasbg.fr/~stokman/

Hans Haubold informs us that his room number, phone
number, and e-mail address have changed. Here is the new information:

Prof. Dr. Hans J. Haubold
Room E0947, UN Outer Space Office
Vienna International Centre
P.O. Box 500, A-1400 Vienna, Austria

Phone: +43-1-26060-4949
Fax  : +43-1-26060-5830
Email: haubold@kph.tuwien.ac.at
WWW  : http://www.seas.columbia.edu/~ah297/un-esa/



Topic #13    -------------    OP-SF NET 6.3   -------------  May 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
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2. Send a message to

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This is handled by an automatic list server. You will receive a
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people on the list maintained by SIAM.



Topic #14    -------------  OP-SF NET 6.3  -------------   May 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
     ftp:     ftp.wins.uva.nl, in directory
               pub/mathematics/reports/Analysis/koornwinder/opsfnet.dir
or   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 6.4 should reach the email address
poly@siam.org before July 1, 1999.

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 June 1999 issue is May 15, 1999 and for the October 1999
issue it is September 15, 1999. 
 
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

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-  OP-SF NET is a forum of the SIAM Activity Group on                 -
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-      The elected Officers of the Activity Group (1999-2001) are:    -
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