NA Digest Sunday, July 18, 1999 Volume 99 : Issue 29

Today's Editor:
Cleve Moler
The MathWorks, Inc.

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From: Iain Duff <>
Date: Wed, 14 Jul 1999 23:30:45 +0100 (BST)
Subject: Leslie Fox Prize Competition

Ninth Leslie Fox Prize Competition
Dundee, June 28 1999

The Ninth Leslie Fox Prize Competition was held in Dundee on Monday 28th June
1999. We are grateful to the assistance of the University of Dundee and
in particular to David Griffiths for organizing rooms, meals, refreshments,
and registrations.

It was announced that the Tenth Leslie Fox Prize Meeting will be held in
Oxford on the Friday before the Dundee conference in 2001. The chairman
of the Adjudicating Committee will be Nick Trefethen.

The finalists presented their talks in the following (randomly chosen)

Vincent Heuveline Arnoldi-Faber method for large non-Hermitian eigenvalue

Aurelian Bejancu Convergence properties of surface spline interpolation.

Paul Houston Adaptive Lagrange-Galerkin methods for unsteady
convection-diffusion problems.

Reha Tutuncu Quadratic convergence of potential-reduction methods for
degenerate problems.

Ross A Lippert The geometry of double eigenvalues.

Niles A Pierce Adjoint recovery of superconvergent functionals from PDE

It was really a terrific programme and the candidates all showed that they
had speaking skills to match the excellence of their papers. The adjudicating
committee of Iain Duff (chairman), Nick Trefethen, and Arieh Iserles were
thus set the unenviable task of choosing the Prize Winners.

The results of their adjudication was that Leslie Fox Prizes would be
awarded to all finalists with the First Prize being shared between
Niles Pierce and Reha Tutuncu.

Congratulations to all.


From: Andreas Ahland <>
Date: Thu, 15 Jul 1999 11:02:53 +0200
Subject: Hypergeometric Function of Complex Arguments

Hi everyone,

The absorption of hydrogen can be solved analytically with hypergeometric
functions. These are solutions to the Kummer differential equation

zf"(z) + (a-z)f'(z) - bf(z) = 0

The general solution is F=c1*M+c2*U (notation of Abramowitz+Stegrun).

The hypergeometric function M or Hypergeometric1F1 (notation used by
Mathematica) is well know and found at netlib.

I am looking for an algorithm or rountine to calculate the hypergeometric
function U for complex numbers a,b,z. Any hints are appreciated!


Andreas Ahland
Lehrstuhl Hochfrequenztechnik
Universitaet Dortmund


From: Ed Nadler <>
Date: Tue, 13 Jul 1999 12:26:30 -0700
Subject: Change of Address for Ed Nadler

Dear Colleagues,

My new contact information is -

Autodesk, Inc.
Mechanical Division
26200 Town Center Drive
Suite 300
Novi, Michigan 48375

telephone: (248) 449-2220

Best regards,
Ed Nadler


From: Walter Lioen <>
Date: Mon, 12 Jul 1999 09:38:26 +0200
Subject: Dutch Community of Numerical Mathematicians

Conference of the Dutch Community of Numerical
Mathematicians, 6 - 8 October 1999, at Woudschoten (NL)

The next conference of the Dutch Community of Numerical Mathematicians
(WNW) has been scheduled for 6, 7, and 8 October 1999, to be held at
the Woudschoten Conference Centre, Zeist, The Netherlands.

Topics of the 1999 conference are:

1. boundary treatment for PDEs,
2. new developments in optimisation.

Invited speakers are:

Theme 1:

Derek Causon (Manchester Metropolitan University),
Douglas Kothe (Los Alamos National Laboratory),
Darren De Zeeuw (University of Michigan).

Theme 2:

Kees Roos (TU Delft) & Erling Andersen (Odense Universitet & TU Delft),
Shlomo Ta'asan (Carnegie Mellon University),
Philippe Toint (Faculte's Universitaires Notre-Dame de la Paix).

For information please apply to the secretary of the organizing committee:

Walter M. Lioen <>
CWI - Centrum voor Wiskunde en Informatica
Organizing committee Woudschoten Conference
P.O. Box 94079
1090 GB Amsterdam
The Netherlands
Telephone: +31-20-5924101
Telefax: +31-20-5924199

Conference URL:


From: Sun Wenyu <>
Date: Tue, 13 Jul 1999 21:12:24 -0300 (EST)
Subject: Session at Nanjing Conference in Memory of Xuchu He

SPECIAL SESSION: Memory of Late Professor Xuchu He

Dear friends and colleagues,

The 1999 Nanjing International Conference on Optimization and Numerical
Algebra will be held at Nanjing Normal University, September 27--30, 1999.
Several organizers and the program committee members of the conference were
former students of the late Professor Xuchu He. Pofessor He was a pioneer
and a leader in computational mathematics and numerical optimization in
China for more than three decades. In 1958 he established the field of
computational mathematics at Nanjing University and trained a lot of Chinese
computational mathematicians. He founded
made an important contribution to the development of computational
mathematics in China. His research work and textbooks in optimization and
numerical analysis has influenced several generations of Chinese
computational mathematicians.

At the Nanjing conference we plan to organize a big session in memory of
Professor Xuchu He. We invite former colleagues, friends and students of
Professor He to participate in this session. The talks at this special
session will be allocated 25 minutes, 15 minutes, or poster sessions.
Please send an abstract of one page for talk and a detailed abstract of
two to three pages for poster before July 30 to:
Professor Jiu Ding, Department of Mathematics, The University of
Southern Mississippi, USA,
Email: or
Professor Wenyu Sun, School of Mathematics and Computer Science,
Nanjing Normal University, Nanjing 210097, China.


From: Fredrik Manne <>
Date: Thu, 15 Jul 1999 11:22:42 +0200 (MET DST)
Subject: Workshop in Bergen on Applied Parallel Computing

PARA2000, Bergen June 18-21, 2000, Call for Papers

The Department of Informatics at the University of Bergen and Parallab are
hosting the fifth International Workshop on Applied Parallel Computing
(PARA2000) June 18-21, 2000 at the University of Bergen, Norway. The general
theme for PARA2000 is "New paradigms for HPC in industry and academia"
focusing on:

-High-performance computing applications in academia and industry,
-The use of Java in high-performance computing,
-Grid and Meta computing,
-Directions in high-performance computing and networking.
-Education in Computational Science.

The PARA2000 meeting is aimed to be an international forum for idea and
competence exchange for specialists in parallel computing, visualization,
etc and scientists from industry and academia solving large scale
computational problems. Another important aim of the PARA meetings is to
strengthen the ties between HPC centers, academia, and industry in the Nordic
countries as well as worldwide.

The meeting starts with a one day tutorial followed by a three day workshop.
There will be several invited one-hour lectures as well as around 70
contributed 20-30 minutes talks. The PARA2000 Proceedings will be published
by Springer-Verlag in their Lecture Notes in Computer Science series.
Prospective participants are invited to submit an extended abstract to


From: Phil Schmidt <>
Date: Thu, 15 Jul 1999 17:08:12 -0400
Subject: Faculty Position at University of Akron

Please post the following announcement

Visiting Assistant Professor of Applied Mathematics

The University of Akron seeks a visiting assistant professor of applied
mathematics for the 1999-2000 academic year. A Ph.D. in applied mathematics
or related area is required. Preference will be given to candidates
whose research interests are in materials science, scientific
computation, dynamical systems, fluid mechanics, electromagnetics,
acoustics, signal processing, or wave propagation.

This position will also be considered for qualified faculty members from
other universities who are on sabbatical leave. For such individuals,
the title will be defined appropriately.

Applicants should have abilities and interests in teaching a variety of
courses at the undergraduate and graduate levels. The University offers
competitive salaries and excellent fringe benefits. Women and
minorities are encouraged to apply. The University of Akron is an equal
education and employment institution. See our webpage at

All materials (application letter, curriculum vitae, unofficial copy of
graduate transcripts, and three confidential letters of reference)
should be sent to: Dr. Phillip Schmidt, Chair; Department of
Mathematics and Computer Science; The University of Akron; Akron, OH
44325-4002. Application Deadline: August 5, 1999


From: Rob Owens <>
Date: Tue, 13 Jul 1999 10:23:10 +0200
Subject: Studentship at the E.P.F.L.

Swiss NSF funded PhD Studentship

A Posteriori Error Estimation for Spectral Element
Solutions to non-Newtonian Flow Problems.

Fluid Mechanics Laboratory
Department of Mechanical Engineering

Applications are invited for the above studentship, available immediately,
to a suitably qualified mathematician or engineer. The ideal student will
have a first degree with UK first class honours or equivalent and will have
a demonstrably strong background in numerical analysis and programming. The
funded project will involve the derivation of rigorous element residual a
posteriori error estimates for quantities of interest in viscoelastic
fluid mechanics (drag, pressure drop etc.) computed using stabilised spectral
element methods.

The E.P.F. Lausanne is a science and engineering school enjoying an excellent
international reputation and located in the heart of French-speaking
Switzerland. Founded 145 years ago it now has approximately 4700 students,
including more than 600 doctoral candidates. Further information about the
institution may be found on its web page The successful
candidate will join a thriving research-oriented Department and have access to
a wide variety of computing platforms for the duration of the project (at
least three years.)

Applications in the form of a covering letter, a full C.V. and the contact
details of three referees may be posted, faxed or emailed to Prof. Robert G.
Owens, DGM-IMHEF-LMF, EPFL, CH-1015 Lausanne, Switzerland; Tel: ++41 21 693 35
89; Fax: ++41 21 693 36 46; Email:

Deadline for receipt of applications: 31 August 1999.

Informal enquiries are welcome.


From: Mike Warby <>
Date: Thu, 15 Jul 1999 12:32:00 +0100 (BST)
Subject: Research Studentship at Brunel University

Research Studentship
BICOM, Institute of Computational Mathematics, Brunel University

Applications are invited for a three-year CASE research studentship
at BICOM as part of the EPSRC funded project

Computational Modelling of Thermoforming and In-Mould Decoration Processes

In these processes thin polymeric sheets, on which patterns are printed,
are deformed into specific shapes. The research will involve the modelling
and numerical simulation of the deformation of the sheets. Of particular
interest in the modelling is the prediction of the thickness distribution
of the deformed structures and the prediction of the distortion of the
patterns printed on the sheets.

The project will be undertaken in close collaboration with two British
manufacturing companies.

Applicants should hold, or expect to obtain, a good first degree or
Masters degree in a subject with a high mathematical content.
The successful applicant will work in areas of computational solid
mechanics associated with the above process. Previous knowledge of the
areas is not essential as a programme of reading and instruction will
be available.

Interested persons should contact as soon as possible

Professor J. R. Whiteman or Dr. M. K. Warby,
BICOM, Dept. of Mathematics and Statistics,
Brunel University, Uxbridge, Middlesex UB8 3PH, UK
TEL: ++44 1895 203270 FAX: ++44 1895 203303
e-mails: or


From: Iain Duff <>
Date: Tue, 13 Jul 1999 18:47:15 +0100 (BST)
Subject: Contents, IMA Journal of Numerical Analysis

Volume 19, Number 3.

Yalamov, P.Y. and Paprzycki, M.
Stability and performance analysis of a block elimination solver for
bordered linear systems.
pp 335-348

Guang-Da Hu, Guang-Di Ju, Meguid, S.A.
Stability of Runge-Kutta methods for delay differential systems
with multiple delays.
pp 349-356

Ng, M.K.
Fast iterative methods for symmetric Sinc-Galerkin systems.
pp 357-373

Moore, G. and Hubert, E.
Algorithms for constructing stable manifolds of stationary solutions.
pp 375-424

Melenk, J.M. and Schwab, C.
An $hp$ finite element method for convection-diffusion problems in
one dimension.
pp 425-453

van Dorsselaer, J.L.M. and Lubich, C.
Inertial manifolds of parabolic differential equations under
higher-order discretizations.
pp 455-471

Pani, A.K.
A qualocation method for parabolic partial differential equations.
pp 473-495


From: Thomas Hogan <>
Date: Thu, 15 Jul 1999 17:48:36 -0400 (EDT)
Subject: Contents, Journal of Approximation Theory

Table of Contents: J. Approx. Theory, Volume 99, Number 1, July 1999

F. Zeilfelder
Strong unicity of best uniform approximations from periodic spline

G. L\'opez Lagomasino and H. Pijeira Cabrera
Zero location and $n$th root asymptotics of Sobolev orthogonal polynomials

A. R. Alimov and H. Berens
Examples of Chebyshev sets in matrix spaces

S. Noschese and L. Pasquini
On the nonnegative solution of a Freud three-term recurrence

V. E. Maiorov
On best approximation by ridge functions

Vitaly Maiorov, Ron Meir, and Joel Ratsaby
On the approximation of functional classes equipped with a uniform
measure using ridge functions

Luoqing Li
The Peetre K-functional and the Riesz summability operator for the
Fourier-Legendre expansions

Yuan Xu
Asymptotics of the Christoffel functions on a simplex in $\BR^d$

Andr\'as Kro\'o and Szil\'ard R\'ev\'esz
On Bernstein and Markov-type inequalities for multivariate polynomials
on convex bodies

V. S. Buyarov, J. S. Dehesa, A. Mart\'\i nez-Finkelshtein,
and E. B. Saff
Asymptotics of the information entropy for Jacobi and Laguerre
polynomials with varying weights

A. B. J. Kuijlaars and W. Van Assche
The asymptotic zero distribution of orthogonal polynomials with varying
recurrence coefficients

Qiyu Sun and Zeyin Zhang
A characterization of compactly supported both $m$ and $n$ refinable

Table of Contents: J. Approx. Theory, Volume 98, Number 2, June 1999

G. Min
On the denseness of rational systems

Alexander M. Stokolos and Walter Trebels
On the rate of almost everywhere convergence of certain classical
integral means

Chrisina Draganova
Smoothest interpolation in the mean

Thomas A. Hogan
Stability and independence for multivariate refinable distributions

Fran\c cois Dubeau and Jean Savoie
On optimal error bounds for derivatives of interpolating splines on a
uniform partition

Nikolai Nikolski
Remarks concerning completeness of translates in function spaces

Marie-Laurence Mazure and Pierre-Jean Laurent
Piecewise smooth spaces in duality: application to blossoming

B. L. Chalmers, D. Leviatan, and M. P. Prophet
Optimal interpolating spaces preserving shape

Author index for Volume 98


End of NA Digest