- Today's Editor:
- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Query About Rounding Error
- Origins of Gram-Schmidt and Conjugate-directions
- Re: Difference Between 1x1 Matrices and Scalars
- Re: Is Scientific Computing Part of Computer Science?
- New Release of the Matrix Template Library
- Parallel Mathematical Libraries Project
- PanAmerican Workshop on Applied and Computational Mathematics
- Electronic Journal of Linear Algeba
- IMACS Conference on Scientific Computing and Mathematical Modeling
- KSIAM Workshop on Domain Decomposition
- VECPAR'2000, Vector and Parallel Processing
- Conference at NYU on Nonlinear Analysis
- Symposium on Computing in Object-oriented Parallel Environments
- Conference in Bulgaria on Numerical Analysis and Applications
- GAMM-Seminar Leipzig on Schroedinger Equations
- Research Positions at HPC2N, Umea University, Sweden
- Position at The Open University
- Positions at RMCS, Cranfield University
- Faculty Position at University of Pittsburgh
- Faculty Position at Baylor University
- Lectureships in Mathematics at University of Wales Aberystwyth
- Positions at University of Warwick
- Pre-Doc Fellowship at the Politecnico di Torino
- Contents, Linear Algebra and Its Applications
- Contents, Journal of Approximation Theory

**URL for the World Wide Web:**
http://www.netlib.org/na-net/na_home.html

-------------------------------------------------------

From: G. W. Stewart <stewart@cs.umd.edu>

Date: Mon, 4 Oct 1999 12:31:07 -0400 (EDT)

**Subject: Query About Rounding Error**

I'm giving a talk later this month on rounding error to the

Baltimore-Washington Section of SIAM. I would appreciate any

interesting anecdotes on real-life embarrassments due to rounding

error. I recall (though I don't know the details) stories about an

index on the Canadian stock market drifting off true and something

about a missile in the Iraq war. If you know the details of these or

any other stories, please pass them on to me.

Pete Stewart

stewart@cs.umd.edu

------------------------------

From: C. G. Broyden <broyden@CsR.UniBo.IT>

Date: Wed, 06 Oct 1999 15:05:31 +0100

**Subject: Origins of Gram-Schmidt and Conjugate-directions**

Dear Colleagues,

Two requests: (1) Can anyone give me the original reference for

the Gram-Schmidt method, and (2) Can anyone give me any details of J.

Morris, whose "escalator method" was arguably the first

conjugate-direction method.

Thanks in anticipation, C. G. Broyden

------------------------------

From: Garry Tee <tee@math.auckland.ac.nz>

Ken Turkowski <turk@apple.com>

Date: Tue, 5 Oct 1999 16:56:34 +1300

**Subject: Re: Difference Between 1x1 Matrices and Scalars**

In last week's NA Digest, Ilse Ipsen wrote:

> There can be a difference between 1x1 matrices and scalars.

>

> Consider the matrix product A*B*C where

>

> A = [1 1] B = [1] C=[1]

> [1] [2]

> [3]

>

> The product A*B*C is not defined because B*C is not defined.

> Nevertheless MATLAB 5.3 computes the answer [2]

> [4]

> [6]

>

> presumably because it associates (A*B)*C. In this case A*B

> happens to be a scalar but should be treated as a 1x1 matrix.

>

> Is this something to worry about?

**********

Garry Tee replies:

Yes, it is something to worry about.

A 1x1 matrix D is not just its single scalar element d_{11}, but it

has associated operations which are not identical with those for a scalar.

The scalar has the property that it can form a scalar product with any

vector or matrix, but the 1x1 matrix does not have that property. The

matrix product DE exists iff E has 1 row, and the matrix product FD exists

iff F has 1 column.

When any array is declared in a PASCAL program (& similarly for

other languages), then some relevant information about the structure must

be stored, as well as just the elements of the array. If a parameter in a

PASCAL procedure is specified as being array[1..1,1..1] of real, then the

compiler will properly reject an actual parameter which is a real scalar; &

it will reject every actual parameter with n subscripts, where n = 1 or

n>=3.

Many operations in linear algebra become simpler and clearer if

scalar multiplication is replaced by matrix multiplication. For example,

consider the eigenvalue equation

Av = ve.

If e is regarded not as a scalar, but as a 1x1 matrix, then this eigenvalue

equation generalizes to the case where m eigenvectors are packed together

to form the m columns of matrix v. In that case, e becomes an mxm matrix of

diagonal form, with the m eigenvalues as the diagonal elements.

The reported behaviour of MATLAB 5.3 must be regarded as a bug, to

be corrected.

Garry J. Tee,

Department of Mathematics, University of Auckland, Auckland, New Zealand.

**********

Ken Turkowski replies:

This is a common occurance. A*B is a dot product, resulting in a scalar.

It could be that A and B are vectors (or covectors) on a surface and C is

a vector (or covector) in three space.

However, the expression *should* be formally expressed as (A*B)*C, since

A*B*C can ambiguously be interpreted as A*(B*C), which is undefined.

------------------------------

From: Ken Turkowski <turk@apple.com>

Bill Silvert <bill@ecology.bio.dfo.ca

Joe Grcar <sepp@sandia.gov>

C T H Baker <cthbaker@ma.man.ac.uk>

Date: Tue, 5 Oct 1999 08:37:59 -0700

**Subject: Re: Is Scientific Computing Part of Computer Science?**

In last week's NA Digest, Martin Berzins <martin@scs.leeds.ac.uk> wrote:

> Every 5 years or so in the UK there is a Research Assessment Exercise

> whereby the research of all University departments is examined.

> The definition of Computer Science for the forthcoming exercise makes

> no mention of Scientific Computing. I'd be interested in the reaction

> of the NA-digest community to this.

**********

Ken Turkowski replies:

Similarly, I'm amazed that very few computer scientists know anything

about

- frequency analysis and filtering (FFT, convolution)

- numerical analysis

Several times annually, I see someone inverting a matrix by computing

cofactors and determinants (accumulating in single-precision!). This sort

of naivete has got to be corrected!

Ken Turkowski

Immersive Imaging Technologist

Apple Computer, Inc.

**********

Bill Silvert replies:

This is an interesting question, but should be broken into two parts --

SHOULD it be a part, and IS it a part. Clearly the needs of scientific

computing are of academic interest, and some computer scientists work in

this area, but many departments overlook it.

The case of FORTRAN illustrates this. FORTRAN is widely used for

scientific computing, but many CS departments refuse to teach it on the

grounds that it is poorly constructed and is not a good subject for

teaching CS. True, but this gap between theory and application has some

pretty negative side effects.

Bill Silvert

Habitat Ecology Section

Bedford Institute of Oceanography,

Dartmouth, Nova Scotia, CANADA

**********

Joe Grcar replies:

Computer science began as an interdisciplinary subject

once synonymous with scientific computing. Today, the

two have little in common besides the transposed names.

The truth of this is revealed by a cursory inspection of

major computer science journals. There are few if any

articles about scientific computing. Examine, for example,

the annual percent of articles on any numerical subject

in JACM, the flagship journal of the ACM. The numerical

content peaks at over 60% in 1960, and fluctuates well

below 10% since 1980.

The reason is, scientific computing remains inter-

disciplinary. The question it addresses is numerical

calculation. This is important but merely procedural

to the sciences; it is not the goal of their intellectual

pursuit. Moreover, as Steve Smale pointed out in his

SIAM von Neumann lecture, numerical analysts never

discovered a theoretical framework that simultaneously

treats questions of error propagation and algorithmic

complexity. So when computer science became an

established academic subject in the 1960's and 70's,

the intellectual core formed around the logical and

combinatorial theory of algorithms without accommodating

questions of numerical error. The latter can be viewed

as part of the mathematical theory of approximation, so

I would expect numerical analysis to find a place there.

Thus, responding to Martin Berzins' question in NA Digest

(v 99 n 39), "is scientific computing part of computer

science?", the answer is "no". We might like the answer

to be different, but the facts plainly indicate it is not.

The point that Martin should make to the authorities

is something like this. Scientific computing is an

integral part of industrial design and scientific research.

One can even argue it is an important aid to making

government policy, since scientific computing is used

to predict the future climate and to develop weapons.

But scientific computing done well is an interdisciplinary

undertaking. None of the participating fields can claim

they alone do the whole thing well, or that projects

in the interdisciplinary subject can compete successfully

for a given field's research funds.

So, given that research in scientific computing is important

and that it is not part of any established program, then

how do the authorities propose to support it?

Lacking some answer to this question, I expect the current

Balkanization of scientific computing to continue. The

inevitable outcome of this will be the use of suboptimal

computing methods and the unrealized potential to address

important scientific and engineering problems.

Joe Grcar

sepp@sandia.gov

**********

Christopher Baker replies:

In NA Digest of October 4 (Volume 99 : Issue 39) Martin Berzins asks,

prompted by RAE2001 -- the Research Assessment Exercise in the UK,

whether Scientific Computing is part of Computer Science. The _draft_

documents issued in connection with RAE2001 (including the definition

of the boundaries of the subjects and the criteria and working

practices) have been issued for the purpose of consultation, and this

and similar issues ought to be raised before OCTOBER 15TH with the RAE

team, for communication to panels:

http://www.rae.ac.uk/Pubs/4_99/4_99.htm

As the Chairman of the Applied Mathematics Panel, which includes

_Numerical_ _Analysis_ in its remit, I shall be happy to raise the

question with the Chairman of the Computer Science Panel. The chairs

of panels in the related areas (Mathematics, Science & Engineering)

meet on Tuesday next. Perhaps I can remark that the general issue of

interdisciplinary research (which I think may be related to this

question) is one to which increased priority is being given,

reflecting its importance. See

http://www.niss.ac.uk/education/hefc/rae2001/1_99.html

The draft criteria for the Applied Mathematics Unit may be read at

http://www.ma.man.ac.uk/~rae2001/Criteria-UoA23.html

Reference to interdisciplinary material and material on the borders of

different assessment units is made in this document. The draft

criteria for all units are available from

http://www.rae.ac.uk/Pubs/4_99/byUoA.htm (as WORD docs!).

RAE2001 may be thought to be a rather local concern, affecting only

the UK, but for better or worse (depending on your viewpoint) these

things acquire an international fashionability, governing the funding

of national research. One of the judgements to be made in RAE2001 is

whether research undertaken at an institution in any given area is of

international excellence. In that respect, and as an innovation, the

panels will approach some non-UK experts to ask for comment.

Christopher Baker

Chair of the Panel for UoA23 (Applied Mathematics)

------------------------------

From: Jeremy Siek <jsiek@lsc.nd.edu>

Date: Tue, 5 Oct 1999 02:22:50 -0500 (EST)

**Subject: New Release of the Matrix Template Library**

Major New Release of the Matrix Template Library

Version 2.1.2-14

Newly Supported Compilers:

Microsoft Visual C++ 6.0

Metrowerks CodeWarrior Pro 5.0 (both Mac and x86)

After much blood, sweat, and tears we are happy to announce the port

of MTL to Visual C++ as well as to CodeWarrior. The ports for both

compilers have passed the full MTL test suite (all 354,432 tests). We

have also ironed out many of the smaller issues with the SGI, KCC, and

g++ compilers (including an update for g++ 2.95). The new version

of MTL is available for download at:

http://lsc.nd.edu/research/mtl/download.php3

Thanks to Valient Gough we have added lu_solve() and lu_inverse()

routines to make it more convenient to use lu_factor() to solve

systems of equations. Thanks to the rest of you for sending

in bug reports, bug fixes, and suggestions!

We encourage MTL users who have written algorithms, data structures

or utility functions that might be useful to others to send your code

in. It is all about code reuse!

There has been a couple small interface changes that are listed

on the web page under "What's New".

Enjoy!

Jeremy Siek and Andrew Lumsdaine

------------------------------

From: Tony Skjellum <tony@Aurora.CS.MsState.EDU>

Date: Fri, 8 Oct 1999 14:33:01 -0500 (CDT)

**Subject: Parallel Mathematical Libraries Project**

We have released the Parallel Mathematical Libraries Project first public

release (PMLP). This is a joint effort of MSU, Intel, VNIIEF, and LLNL.

It has sparse iterative, direct, sequential and parallel solvers in C++,

with beta C and Fortran interfaces at present. It supports NT systems and

NT clusters (using MPI).

A lot of modern C++ techniques have been applied to making this system

flexible in data structure, and also to exploit opportunities for

performance. This is the first release of the library, and we expect to

continue improving in future.

Please visit the PMLP page at http://www.erc.msstate.edu/labs/hpcl/pmlp

Thanks,

Tony Skjellum

------------------------------

From: Jose Castillo <castillo@myth.sdsu.edu>

Date: Mon, 4 Oct 1999 15:15:22 -0700 (PDT)

**Subject: PanAmerican Workshop on Applied and Computational Mathematics**

The Third PanAmerican Workshop on Applied and Computational Mathematics

(PWACM III) will be held in Chile, December 12-17, 1999. The Workshop will

emphasize applications of mathematics to industry, technology, science and

society. Proposals for mini-workshops, short talks, posters, and short

courses are solicited. See

http://www.sci.sdsu.edu/math_cs/PanAm98.html

Thanks, Jose

------------------------------

From: Daniel Hershkowitz <hershkow@techunix.technion.ac.il>

Date: Sat, 9 Oct 1999 23:21:09 +0200 (IST)

**Subject: Electronic Journal of Linear Algeba**

The International Linear Algebra Society (ILAS) is considering the production

of a hard copy of volumes 1-4 of the Electronic Journal of Linear Algeba (ELA)

(about 320 pages), and we have been working and negotiating with several

printing companies about quality, price, ... . We hope to sell the hard copy

(probably soft cover) to ILAS members, other linear algebraists, interested

mathematicians, and also to libraries. The cost is expected to be $20 with a

20% discount for ILAS members, including surface mail shipping.

In order to determine how many copies should be produced, we are conducting

an electronic survey. We ask you to e-mail ASAP, but no later than the

October 15, to

Jim Weaver: jweaver@uwf.edu

your response to the question that follows. Your answer does not commit

you in any way but please answer as accurately as possible.

Our plan is to make hard copies of future volumes of ELA available to those

who wish to purchase them.

The ILAS Executive thanks you for your help.

___________________________

I WOULD EXPECT TO PURCHASE A HARD COPY OF VOLUMES 1-4 OF ELA FOR $20

($16 for ILAS members) IF IT WERE MADE AVAILABLE:

YES________ NO________.

REPLY TO jweaver@uwf.edu

------------------------------

From: Bruce A Wade <wade@csd.uwm.edu>

Date: Tue, 5 Oct 1999 11:49:02 -0500 (CDT)

**Subject: IMACS Conference on Scientific Computing and Mathematical Modeling**

May 25-27, 2000, Milwaukee, Wisconsin

Hosted by the University of Wisconsin-Milwaukee

Conference Topics:

Air and Water Pollution Models

Atmospheric Science

Computational Fluid Dynamics

Domain Decomposition

Financial Mathematics

Grid Generation

Ill-Posed Problems

Industrial Mathematics

Image Processing

Mathematical Biology

Mathematical Optimization

Multi-grid Methods

Parallel Computing

Recent Algorithms for solving PDE's and ODE's

Stiff Computations

CALL FOR PAPERS

Please send extended abstracts by January 10, 2000 to:

Dr. S.K. Dey

Department of Mathematics

Eastern Illinois University

Charleston, IL 61920 (USA)

Selected papers will be published in full in the proceedings and all

abstracts (other than those in the proceedings) will be published in the

book of abstracts.

For more information please visit

www.uwm.edu/Dept/CIM/IMACS.html

or contact

Bruce A. Wade (wade@uwm.edu), David H. Schultz (schultz@uwm.edu)

or Suhrit K. Dey (cfskd@eiu.edu)

------------------------------

From: Do Y. Kwak <dykwak@math.kaist.ac.kr>

Date: Wed, 06 Oct 1999 13:36:21 +0000

**Subject: KSIAM Workshop on Domain Decomposition**

First International KSIAM Workshop

Domain Decomposition Method

Seoul National University, Sangsan Hall

Oct 29 - 31, 1999

Seoul, Korea

We announce 1st International KSIAM Workshop. The KSIAM aims to gather

mathematicians and engineers at the same podium, encourage them to find

common interests, work together in or near Korean peninsula. Its scope

includes all areas of applied mathematics, engineering, economics,

management science, medical sciences, etc., which uses mathematics as

a tool. The society also seeks to promote interdisplinary collaboration

between mathematician and engineers. The topic of this particular

Workshop is the Domain Decomposition Methods. DDM has served as a main

tool in in scientific computations arising in the fields such as

Numerical Analysis, Computational Fluid Dynamics, Mechnical Engineering,

etc. The objective of this Workshop is to promote understanding and use

of DD for the solution of problems arising in various fields of science

and engineering and to promote interaction between researchers. The

Workshop will include invited talks by leading experts and contributed

talks in the related fields.

Invited Speakers:

P. Bjorstad(University of Bergen, Norway)

O. Widlund, (NYU. USA)

D. Keyes, (ODU, USA)

Contributed talks :

Sangback Ma, (A scalable parrellel preconditioner for large sparse

linear system on a message passing system)

Jinhee Lee, (Application of Pseudospectral Domain Decomp. Method to

Structural Mechanics)

Kwang Yeon Kim and Do Y. Kwak, (Mixed Covolume Methods for quasilinear

equation)

Sea Jang Youn, Hyung-Suk Kang, (Comparison of Heat Loss from a

rectangular fin)

Haecheon Choi, (Active Turbulence Control using Mathematical Theory)

SeokChan Kim

Organizing Committee:

Ha Jine Kimn (Ajou University) : hjkimn@madang.ajou.ac.kr

Do Young Kwak (KAIST) dykwak@math.kaist.ac.kr

Yonghoon Kwon (Pohang University of Science and Technology) :

kwony@posmath.postech.ac.kr

Sang Kwon Chung (Seoul National University) : chung@plaza.snu.ac.kr

Sang Geun Hahn(KAIST) sghahn@math.kaist.ac.kr

Seung Jo Kim (Seoul National University) : sjkim@gong.snu.ac.kr

Registration:

Web page http://icms.kaist.ac.kr/~ksiam/public.html

E-mail: dykwak@math.kaist.ac.kr

E-mail: ksiam@icms.kaist.ac.kr

For everything and more call

Do Young Kwak(KAIST) tel (042) 869 - 2720, e-mail

dykwak@math.kaist.ac.kr

Ha Jine Kimn (Ajou Univ.): tel (0331) 219 - 2433, e-mail

hjkimn@madang.ajou.ac.kr

------------------------------

From: A. Augusto de Sousa <Augusto.Sousa@inescn.pt>

Date: Wed, 06 Oct 1999 10:43:56 +0100

**Subject: VECPAR'2000, Vector and Parallel Processing**

VECPAR'2000 ---- THIRD and LAST ANNOUNCEMENT AND CALL FOR PAPERS

SUMMARY OF IMPORTANT INFORMATION

Deadline for submission of abstracts: October 29, 1999

Proposals for tutorials due: October 29, 1999

Final papers due: March 31, 2000

Deadline for early registration: April 28, 2000

Secretariat: congress.porto@abreu.pt

Organisation: vecpar2000@fe.up.pt

VECPAR'2000 web site: http://www.fe.up.pt/vecpar2000/

VECPAR'2000 is a multidisciplinary meeting on vector and parallel

processing. This will be the fourth in a series of conferences initiated

in 1993, and organised by the Faculty of Engineering of the University of

Porto, Portugal.

The main objective is to disseminate research results on parallel and

distributed computing in many areas of science and engineering.

TOPICS OF INTEREST

Papers are solicited in all areas of vector, parallel and distributed

computing applied to a broad range of research disciplines. Specially

welcome are papers on "Applications of Parallel and Distributed Computing

in Engineering" - the major theme of VECPAR'2000.

The principal topics of VECPAR'2000 include but are not limited to:

* Cellular automata

* Computational fluid dynamics

* Crash and structural analysis

* Data warehousing and data mining

* Distributed computing and operating systems

* Fault tolerant systems

* Imaging and graphics

* Interconnection networks

* Languages and tools

* Numerical methods

* Parallel and distributed algorithms

* Parallel and distributed computing in education

* Real-time and embedded systems

* Reconfigurable systems

INVITED TALKS AND SPEAKERS

* Michael Duff (University College London, UK)

"Thirty Years of Parallel Image Processing"

* Ian Foster (Argonne National Lab. and the Univ. of Chicago, USA)

"High Performance Computing on the Internet"

* Roger Owen (University of Wales Swansea, UK)

"Finite/Discrete Element Analysis of Multi-fracture and Multi-contact

Phenomena"

* Ugo Piomelli (University of Maryland, USA)

"Large-Eddy Simulations of Turbulent Flows, from Desktop to Supercomputer"

* Mark Stadtherr (University of Notre Dame, USA)

"Parallel Computing Applications in Chemical Process Engineering"

* Dietrich Stauffer (Cologne University, Germany)

"Cellular Automata: Applications"

ABSTRACTS

The paper selection for the meeting will be made on the basis of an

extended abstract (between 1000 and 2000 words). Extended abstracts should

describe the purpose and scope of the work, contribution to the

state-of-the-art, methods used, essential results already obtained, results

to be included in the final version of the paper, conclusions and

supporting figures and references where appropriate.

Detailed instructions for abstract submissions can be found in the

conference Web pages:

http://www.fe.up.pt/vecpar2000/

Submissions should be sent until October 29, 1999.

MORE INFORMATION

For more information, please consult the conference Web pages, using the

URL address

http://www.fe.up.pt/vecpar2000/

contact the meeting secretariat or the organising committee at

vecpar2000@fe.up.pt

------------------------------

From: Mary Pugh <mpugh@math.upenn.edu>

Date: Wed, 6 Oct 1999 09:53:23 -0400 (EDT)

**Subject: Conference at NYU on Nonlinear Analysis**

Nonlinear Analysis, 2000

May 28 - June 2, 2000

Courant Institute, New York University

This conference is dedicated to the state of the art in nonlinear

analysis and its applications, with emphasis on partial and ordinary

differential equations. Applications will include numerical analysis,

optimal control, inverse problems, mathematical physics, dynamical

systems, fluid dynamics, mathematical biology, mathematical finance,

and other areas of applied mathematics. All talks will be short

presentations by promising junior scientists. There will be 60 to

70 presentations during the week. In addition there will be open

discussion sessions and small working groups to discuss topics and

approaches in more detail. Please see

www.cims.nyu.edu/math2k

or send Mary Pugh e-mail (mpugh@math.upenn.edu)

------------------------------

From: MaryDell Tholburn <marydell@lanl.gov>

Date: Wed, 06 Oct 1999 15:50:55 -0600

**Subject: Symposium on Computing in Object-oriented Parallel Environments**

ISCOPE'99 Call for Posters

The Third International Symposium on

Computing in Object-oriented Parallel Environments

December 7-10, 1999

Crowne Plaza Hotel in Union Square

San Francisco, CA, USA

http://www.acl.lanl.gov/iscope99/

The third International Symposium on Computing in Object-oriented

Parallel Environments (ISCOPE'99) Conference will be held in San

Francisco, California, USA, during December 7-10, 1999. ISCOPE is a

leading forum where researchers and practitioners of high-performance

object-oriented computing can exchange technical ideas and investigate

success stories in application deployment.

In the ISCOPE'99, a poster session will be held. Authors preferring an

informal and interactive presentation of their fresh results or on-going

projects may submit a proposal for the poster.

The topics include:

* Scientific applications

* Parallel/Distributed problem solving environments

* Parallel/Distributed languages and systems

* Compiler technologies and performance issues

* High-performance run-time systems

* Programming/Debugging/Visualization tools

* Class libraries, frameworks, and design patterns

* Components, reuse, and portability

* Software Engineering issues

* Theoretical foundations, formal methods

* Multi-agent systems

* Reflection and Metaprogramming

* High-performance databases and data mining

* Financial applications

* Real-time applications

* Global computing, Internet computing and the Grid

* Heterogeneous computing environments

* Standards for object interoperability

Proposals must be sent to ishikawa@rwcp.or.jp via e-mail,

which should include:

- Subject: "[ISCOPE99] Poster proposal" must appear in the subject line.

- Poster Title

- An abstract (less than 300 words) that describes the content of the

poster.

- Name, address, e-mail, phone, and fax information for the presenter.

Deadline for submission: October 22th, 1999.

Author Notification : November 1st, 1999.

------------------------------

From: Plamen Yalamov <yalamov@ami.ru.acad.bg>

Date: Thu, 7 Oct 1999 10:31:36 +0400 (MEDT)

**Subject: Conference in Bulgaria on Numerical Analysis and Applications**

CALL FOR MINISYMPOSIA PROPOSALS

SECOND CONFERENCE ON NUMERICAL ANALYSIS AND APPLICATIONS

Rousse, Bulgaria

June 11-15, 2000

organized by the University of Rousse, Bulgaria in cooperation with SIAM

and endorsed by the International Linear Algebra Society

This conference follows the meeting held in June 24-28, 1996 at the

University of Rousse. There were more than 80 participants from 22

countries around the world. The refereed proceedings of the first meeting

were published by Spinger Verlag in the LNCS series.

The main tracks of the current conference are:

1. Numerical Linear Algebra.

2. Numerical Methods for Differential Equations.

3. Numerical Modeling.

4. High Performance Scientific Computing.

We would like to invite organization of Minisymposia focused on a subtopic

pertinent to the conference tracks. Each minisymposium should consist of

four or more presentations. To contribute a Minisymposium, please send an

abstract and the names of authors and titles of their presentations. Short

abstracts of each talk will be very helpful. The deadline for submission of

proposals is February 1st, 2000.

Please e-mail the materials (PostScript, LaTeX or ASCII) to

Plamen Yalamov yalamov@ami.ru.acad.bg

Lubin Vulkov vulkov@ami.ru.acad.bg

Marcin Paprzycki marcin@orca.st.usm.edu

Detailed and regularly updated information can be found at:

http://orca.st.usm.edu/marcin/mp/cfp/rousse00/rousse00.html

http://unidhp.uni-c.dk/~yalamov/conferences.html

in the NA-DIGEST.

------------------------------

From: Jens Burmeister <jb@numerik.uni-kiel.de>

Date: Fri, 8 Oct 1999 16:11:11 +0200 (MET DST)

**Subject: GAMM-Seminar Leipzig on Schroedinger Equations**

Dear colleagues,

I'm very pleased to announce the

16th GAMM-Seminar Leipzig on

Numerical Techniques for Schroedinger Equations

February 3rd to 5th, 2000.

Chairmanship: Wolfgang Hackbusch.

Location: Max-Planck-Institute

for Mathematics in the Sciences,

Leipzig, Germany.

The first fifteen GAMM-Seminars were held in 1984, 1986-1999 at

the Christian-Albrechts-University to Kiel under the title

Annual GAMM-Seminar Kiel.

For more information please visit our website

http://www.mis.mpg.de/conferences/gamm/

With best regards

Jens Burmeister

------------------------------

From: Bo Kagstrom <Bo.Kagstrom@cs.umu.se>

Date: Fri, 8 Oct 1999 17:35:42 +0200 (MET DST)

**Subject: Research Positions at HPC2N, Umea University, Sweden**

Dear friends,

Please, find an announcement for job positions

at HPC2N, Umea University that we would like

to have announced in the NA-digests.

Many thanks in advance.

Best regards,

Bo Kagstrom

High Performance Computing Center North (www.hpc2n.umu.se)

HPC2N is a national center for scientific and parallel computing located

at Umea university. The activities include education, research and competence

development in high-performance computing (HPC), visualization, and VR

technology; regional and national services for HPC production runs in

scientific and industrial applications; knowledge transfer (new users,

new areas); application and user support;etc.

The parties of HPC2N are Umea University, Lulea University of Technology,

The Swedish Institute of Space Physics in Kiruna, The Swedish University

of Agricultural Sciences (SLU) in Umea and Mid-Sweden University.

We welcome applications for the following new positions:

Advanced Consultants in Scientific and High Performances Computing,

Scientific Visualization and VR applications (dnr 3155-1773-99)

One or two full time positions at HPC2N. You will actively support and take

part in research and development (R&D) projetcs that use Umea University's

advanced computer resources for parallel computing, access and processing

of data, scientific visualization and VR applications.

You should have extensive experience from R&D work in one or several of

the areas mentioned in the position. We expect that you have a Masters degree

in Computing Science and Engineering or a similar education. A Ph.D. degree

and pedagogical experience are considered a merit.

Positions for PhD Studies in Scientific and Parallel Computing,

(dnr 3155-1774-99)

One or two full time positions at the Department of Computing Science.

You will conduct PhD studies and research in the development of efficient

methods, tools, algorithms and and library software for high-performance

parallel computer systems. The post-graduate studies will include basic

research as well as application-oriented research. We work in an inter-

national environment in close collaboration with well-known universities

and research institutes.

We expect that you have a Masters degree in Computing Science and Engineering

or a similar education. It is a merit to have documented merits and

experiences in Scientific, Parallel and High Performance Computing.

For further information, please, contact Professor Bo Kagstrom,

email: bokg@cs.umu.se. Applications are to be directed and sent to

Registrator, Umea University, S-901 87 Umea, Sweden. For the complete

announcement, see http://www.umu.se/umu/aktuellt/lediga_tjanster.

The CLOSING DATE for application to the positions (dnr 3155-1773-99

and dnr 3155-1774-99) is October 29, 1999.

You are most welcome with your application!

------------------------------

From: Roland England <R.England@open.ac.uk>

Date: Fri, 08 Oct 1999 16:51:30 +0100

**Subject: Position at The Open University**

CHAIR IN APPLIED MATHEMATICS

The Open University invites applications for a Chair in Applied Mathematics -

as part of a major commitment to strengthen both research and teaching in

Applied Mathematics.

You should have an excellent record of research publication and of teaching at

a range of levels, academic leadership qualities (proven or potential), and a

vision for our curriculum development.

You will have an opportunity to build a strong research team: we are making

available at least one additional Lectureship and one additional

Lectureship/Senior Lectureship, to be filled following your appointment. Your

leadership qualities are more important than your precise research area, but we

would particularly welcome your application if you work in non-linear

dynamics, quantum mechanics or numerical analysis of dynamical systems.

You will lead the Department that teaches more Applied Mathematics students

than any other UK University, with impressive multi-media resources to ensure

that your courses are at the forefront of current teaching and learning

technologies.

The post is based in Milton Keynes. Confidential informal enquiries may be

made of Professor David Brannan (Tel: +44 (0)1908-652892; email:

d.a.brannan@open.ac.uk). Further particulars of the post and the application

process may be obtained from Ms J Barker (Department of Applied Mathematics,

The Open University, Walton Hall, Milton Keynes, Bucks MK7 6AA, UK;

Tel: +44 (0)1908-653580; email: j.barker@open.ac.uk).

The closing date for applications is 5th November 1999. Shortlisted candidates

will be invited to visit the Department in late November/early December, and

interviews will be held on 16th December 1999.

Disabled applicants whose skills and experience meet the requirements of the

job will be interviewed. Please let us know if you need your copy of the

further particulars in large print, on computer disk, or on audio-cassette

tape. Hearing impaired persons may make enquiries on

Milton Keynes (01908) 654901 (Minicom answerphone).

Equal Opportunity is University Policy.

http://watt.open.ac.uk/personnel/emp/pr.htm

Post No 10586

------------------------------

From: Joyce Aitchison <aitchison@rmcs.cranfield.ac.uk>

Date: Tue, 5 Oct 1999 13:56:18 +0100

**Subject: Positions at RMCS, Cranfield University**

Applied Mathematics & Operational Research Group

Cranfield University - Royal Military College of Science, Shrivenham.

Applications are invited for two posts in the Applied Mathematics and

Operational Research Group of Cranfield University at the Royal Military

College of Science, Shrivenham.

LECTURER in COMPUTATIONAL MATHEMATICS or STATISTICS

The appointee will contribute to the teaching of mathematics or statistics

to specialist MSc and short course programmes. He/she will also provide

service teaching to non-specialist courses and must be prepared to work

with a wide range of students.

Applicants should have an established record in an appropriate research

area or clear research potential. The current research activities of the

group include mathematical modelling, numerical methods, scientific

computing and applied statistics. Applications are invited from candidates

with compatible research interests. The successful candidate will be

expected to develop his/her research activities and to supervise

postgraduate students.

Flexibility and willingness to work with other members of staff and a

variety of students are essential. Reference DIS21.

TEACHING ASSOCIATE in COMPUTATIONAL MATHEMATICS

The Group also wishes to appoint a Teaching Associate to assist with its

Computational Mathematics activities. The main duties will be to provide

support for the wide range of computer hardware and software which is in

use within the group, to assist in the preparation of computer-based

teaching material and the running of computer practicals, and to give a

limited number of lectures and tutorials. There will be an opportunity to

become involved with research projects within the group.

The appointment will ideally suit a graduate in a mathematically related

discipline with an MSc degree or similar qualification. Experience in

scientific programming, preferably in Fortran, C or Matlab, is essential.

The successful candidate will be required to work on a variety of projects

and so flexibility and willingness to work with different members of staff

and groups of students is essential. Reference DIS22.

Informal enquiries about both posts may be made to Joyce Aitchison on

(01793) 785276 or email J.M.Aitchison@rmcs.cranfield.ac.uk or see our

website at

http://www.rmcs.cranfield.ac.uk/departments/dois/amorg/

Application forms and further details may be obtained from the Personnel

Office, Cranfield University, RMCS Shrivenham, Swindon, SN6 8LA. Tel:

(01793) 785758 quoting the appropriate reference.

Completed applications should be sent to the Personnel Office before the

closing date of 26 November 1999.

------------------------------

From: William Layton <wjl+@pitt.edu>

Date: Tue, 5 Oct 1999 09:32:18 -0400 (EDT)

**Subject: Faculty Position at University of Pittsburgh**

MELLON CHAIR PROFESSOR

The Mathematics Department of the University of Pittsburgh invites

applications for an endowed Mellon Chair, to begin with the Fall Term 2000

subject to budgetary approval. Mellon Chairs are intended to be the most

prestigious academic appointments at the University of Pittsburgh.

Applicants should have outstanding research records and be acknowledged

leaders in their fields of expertise. We also seek excellence in teaching

so applicants should demonstrate a dedication to teaching and supervising

students. The applicant should be committed to taking a leadership role

in advancing the research profile and national reputation of the Department.

We particularly encourage applications from members of under represented

minority groups and women. The University of Pittsburgh is an affirmative

action, equal opportunity employer. Send a vita, and the names and

addresses of up to five experts who support your application to:

Mellon Search Committee

Department of Mathematics

University of Pittsburgh

Pittsburgh, PA 15260

The Search Committee will begin the selection process on January 4, 2000.

------------------------------

From: Ronald Morgan <Ronald_Morgan@baylor.edu>

Date: Thu, 07 Oct 1999 14:36:34 -0600

**Subject: Faculty Position at Baylor University**

The Baylor University Department of Mathematics invites applications for a

tenure track position, at the assistant professor level, starting August

2000. Excellence in teaching and research/scholarship is essential. A

current curriculum vitae, three recent letters of reference, a photocopy

of each official transcript, and statements about your philosophy of

teaching and of research must be included in the application.

Applications will be reviewed beginning Nov. 1, and will be accepted until

the position is filled. To ensure full consideration, an application

should be completed by Dec. 15, 1999. Baylor is a Baptist university

affiliated with the Baptist General Convention of Texas. As an

Affirmative Action/Equal Employment Opportunity Employer, Baylor

encourages minorities, women, veterans, and persons with disabilities to

apply. Send to Mathematics Search Committee, P.O. Box 97328, Waco, TX

76798-7328. Feel free to contact Ron Morgan at morganr@baylor.edu if you

have questions.

------------------------------

From: Tim Phillips <tnp@aber.ac.uk>

Date: Fri, 08 Oct 1999 15:02:10 +0100

**Subject: Lectureships in Mathematics at University of Wales Aberystwyth**

Lectureships in Mathematics

University of Wales Aberystwyth

Applications are invited for two lectureships in the Department

of Mathematics at the University of Wales, Aberystwyth. The

successful candidates will interact with a thriving research group

specializing in Computational Rheology. The group has a Grade 5

rating in Applied Mathematics. Its activities involve constitutive

models for complex fluids and the numerical prediction of complex

flows, feeding off a central experimental programme. Candidates

with strong research profiles or potential in any area of modern

applied mathematics, analysis, or computation, who are willing to

collaborate on challenging problems in the dynamics of complex

fluids, are encouraged to apply. One of those appointed will have

responsibility for teaching courses in analysis. The posts are

available from January 2000, but starting dates can be delayed if

necessary.

Further particulars and application forms, returnable by 12th November

1999, may be obtained from the Personnel Office, Old College,

King Street, Aberystwyth, Ceredigion SY23 3AX (Tel: 01970 621832;

fax: 01970 622975; e-mail: lml@aber.ac.uk).

Informal enquiries may be made of Professor Russell Davies

(Tel: 01970 622755; fax: 01970 622777; e-mail: ard@aber.ac.uk)

or Dr Tim Phillips (Tel: 01970 622769; fax: 01970 622777;

e-mail: tnp@aber.ac.uk).

------------------------------

From: Georgina Copeland <george@maths.warwick.ac.uk>

Date: Tue, 5 Oct 1999 17:04:20 +0100

**Subject: Positions at University of Warwick**

UNIVERSITY OF WARWICK, UK

LECTURESHIPS IN MATHEMATICS AND COMPUTER SCIENCE

Applications are invited for Lectureships in the Departments of Mathematics

and Computer Science. We seek individuals who are committed to teaching and

who wish to build strong research programmes. In particular the purpose of

these two positions is to strengthen a growing research programme in

Applied and Computational Mathematics at Warwick University; both the

Mathematics and Computer Science Departments at Warwick were given the

highest possible rating in the most recent UK research selectivity exercise.

The position in The Mathematics Department is in the area of Applied

Analysis. Expertise in applications of fields such as Dynamical Systems,

PDEs, Stochastic Processes or Wavelets and Multiresolution Analysis will be

particularly welcomed. Preference will be given to qualified candidates

knowledgeable in computational aspects of their field.

The position in The Computer Science Department is in the area of

Scientific Computing. Expertise in the application and analysis of high

performance or distributed computing environments to the solution of

problems arising in fields such as numerical linear algebra and

optimisation, molecular dynamics and image/signal processing will be

particularly welcomed. Preference will be given to qualified candidates

whose research and teaching interests complement both those of the Computer

Science Department and the research group in applied and computational

mathematics within the Mathematics Department.

It is anticipated that appointments will be made at the Lecturer Grade A

scale =A317,236 - =A322,579 pa but there is some flexibility and more

experienced candidates should not be discouraged from applying.

Further information is available from http://www.maths.warwick.ac.uk and

http://www.dcs.warwick.ac.uk enquiries may be made to Professor A. Stuart

(e:mail george@maths.warwick.ac.uk)

Please quote appropriate reference. 9/2A/99

Applications forms and further particulars can be obtained from the

Personnel Office, University of Warwick, Coventry CV4 7AL 02476 523685

e:mail recruit@admin.warwick.ac.uk) or from the web page

http://www.warwick.ac.uk/jobs

Closing Date: 15th December 1999

UNIVERSITY OF WARWICK, UK

LECTURESHIPS IN MATHEMATICS

Applications are invited for Lectureships in the Department of Mathematics.

We seek individuals who are committed to teaching and who wish to build

strong research programmes. Outstanding candidates from any area of the

mathematical sciences are invited to apply. For one of the posts preference

will be given to candidates in applied analysis and for this expertise in

applications of dynamical systems, pdes, stochastic processes or wavelets

would be particularly welcomed. The department is also keen to attract

candidates in any area of financial mathematics.

There are both permanent and 3-year posts available. The latter 3-year

Warwick Zeeman Lectureship(s) are intended for recent PhD's of outstanding

promise who would like an opportunity to begin their careers at one of the

UK top rated departments in an environment that nurtures and encourages

both research and teaching. Warwick Zeeman Lecturers will be expected to

continue their already promising research programmes, will carry a two

course per year teaching load, will act as tutors for approximately 17

students and will be expected to participate fully in the scholarly life of

the department. Each appointee will have an academic staff mentor who will

actively help in preparing the person for his or her future career by

advising on pedagogy and development of teaching and communication skills

and in identifying suitable opportunities for permanent posts.

It is anticipated that appointments will be made at the Lecturer Grade A

scale =A316,655 to =A321,815 pa ) with progression by annual increments to the

Lecturer Grade B Scale subject to satisfactory performance. However, there

is some flexibility and more experienced candidates should not be

discouraged from applying for a permanent post.

Please quote appropriate reference: 9/A/99

Further information may be obtained from http://www.maths.warwick.ac.uk and

enquiries may be made to Professor David Rand (e:mail:

george@maths.warwick.ac.uk).

Applications forms and further particulars can be obtained from the

Personnel Office, University of Warwick, Coventry CV4 7AL 024 7652 3685

e:mail recruit@admin.warwick.ac.uk) or from the web page

http://www.warwick.ac.uk/jobs

Closing Date: 15th December 1999

------------------------------

From: Claudio Canuto <ccanuto@calvino.polito.it>

Date: Thu, 07 Oct 1999 13:09:05 +0200

**Subject: Pre-Doc Fellowship at the Politecnico di Torino**

The Department of Mathematics of the Politecnico di Torino (Italy)

is willing to support one PhD student enrolled in the local PhD program

in Applied Mathematics, with the final goal of preparing a Thesis on a

topic related to `Multilevel approximations of partial differential

equations'.

Since funding comes from the European Union (TMR Project), the law

requires the fellowship to be exclusively reserved to non-Italian

citizens of the European Union (plus Israel).

The fellowship amounts to 1200 Euros per month, plus the coverage

of tuition fees. The grant initially covers the first year of Doctorate

study, but it can be renewed for the second and third year. There will

be the possibility of carrying on a limited teaching activity.

Candidates should register in our PhD Program mandatorily before

November 2, 1999. Please note that the Italian law requires an Admission

Exam to PhD Programs, which will be held in Torino in December 1999. The

PhD activity will start on January 2000.

I urge all potential candidates to contact me as soon as possible, in

order to get any further information on the matter. Thank you for your

kind attention.

------------------------------

From: Hans Schneider <hans@math.wisc.edu>

Date: Wed, 6 Oct 1999 09:14:58 -0500 (CDT)

**Subject: Contents, Linear Algebra and Its Applications**

Journal: Linear Algebra and Its Applications

ISSN : 0024-3795

Volume : 297

Issue : 1-3

Date : 20-Oct-1999

pp 1-7

Diagonability of idempotent matrices over noncommunicative rings

GUANGTIAN Song

pp 9-22

Le theoreme de hua pour les algebres artiniennes simples

H Essannouni

pp 23-56

Stratification of linear systems. Bifurcation diagrams for families

of linear systems

I Garcia-Planas

pp 57-61

Operators which are remain convergent when multiplied by certain

Hermitian operators

B Cain

pp 63-80

Eigenvalues of tridiagonal pseudo-toeplitz matrices

D Kulkarni, SZEKAI Tsui

pp 81-85

Extensions d'operateurs auto-adjoints et defaut de reflexivite

M'HAMMED Benlarbi Delai

pp 87-105

Is every matrix similar to a Toeplitz matrix?

SM Mackey, N Mackey

pp 107-132

Inverse eigenvalue problem: existence of special mass-damper-spring

systems

P Nylen

pp 133-155

Robust controllability and robust closed-loop stability with static

output feedback for a class of uncertain descriptor systems

C Lin, JL Wang

pp 157-175

Majorization polytopes

G Dahl

pp 177-182

On the decomposition of a matrix into the sum of stable matrices

Y Ito

pp 183-191

A note on the equivalence of a class of factorized Broyden families

for nonlinear least squares problems

H Ogasawara

pp 193-202

The distribution of the maximum condition number on great circles

through a fixed 2 x 2 real matrix

D Lewis

pp 203-203

Author index

------------------------------

From: Thomas Hogan <hogan@math.ohio-state.edu>

Date: Thu, 7 Oct 1999 13:42:09 -0400 (EDT)

**Subject: Contents, Journal of Approximation Theory**

Table of Contents: J. Approx. Theory, Volume 100, Number 1, September 1999

Gilbert Helmberg

A corner point Gibbs phenomenon for Fourier series in two dimensions

1--43

M. Alfaro, A. Mart\'inez-Finkelshtein, and M. L. Rezola

Asymptotic properties of balanced extremal Sobolev

polynomials: coherent case

44--59

Tam\'as Erd\'elyi

Notes on inequalities with doubling weights

60--72

Les{\l}aw Skrzypek

The uniqueness of norm-one projection in James-type spaces

73--93

Walter Roth

Korovkin approximation for weighted set-valued functions

94--112

D. Leviatan and I. A. Shevchuk

Some positive results and counterexamples in comonotone

approximation, II

113--143

L. De Michele and D. Roux

The Gibbs phenomenon for $L_{\rm loc}^1$ kernels

144--156

I. Bruj and G. Schmieder

Best approximation and saturation on domains bounded by curves of

bounded rotation

157--182

Borislav Bojanov

Markov interlacing property for perfect splines

183--201

------------------------------

End of NA Digest

**************************

-------