NA Digest Saturday, March 6, 2004 Volume 04 : Issue 10

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

Submissions for NA Digest:

Mail to

Information via e-mail about NA-NET: Mail to


From: Alfonso Bueno <>
Date: Mon, 1 Mar 2004 23:07:28 +0100
Subject: 3D Data Visualization

Dear NA Digest readers:

I am teaching this semester a new subject at my University about
"Mathematicals Tools in Engineering". One of the main parts of this
subject is data visualization, and I'd like to focus in 3D (both scalar
and vectorial) representations. However, I don't have a lot of examples
to show in the classroom, so I'd thank if any member of this community
could suply me any data from his simulations in any field. A small
explanation about the data and the format in which the it is storaged
would also be helpful.

Thanks in advance,

Alfonso Bueno (
Department of Mathematics
Universidad de Castilla-La Mancha (SPAIN)


From: Bernard Beauzamy <>
Date: Thu, 4 Mar 2004 16:17:15 +0100
Subject: New Book, Probabilistic Methods for the Study of Real-life Phenomena

Dear Colleagues,
I am pleased to inform you of the availability of my new book :
"Probabilistic methods for the study of real-life phenomena" (in French).
Please consult our web site for ordering information.


From: Xiaoye S. Li <>
Date: Wed, 03 Mar 2004 11:50:57 -0800
Subject: Bay Area Scientific Computing Day

The Fifth Bay Area Scientific Computing Day will be held at
the Lawrence Berkeley National Laboratory on Saturday, March 13, 2004.
The program is now on the web, with most of the abstracts in place.
The meeting will include 10 technical talks, 12 contributed poster
presentations, and a 60-minute round table discussion.
Please see the following site for details:

The on-line registration deadline is March 6, 2004.

Tony Drummond (
Parry Husbands (
Sherry Li (
Osni Marques (


From: Malachy McConnell <>
Date: Mon, 1 Mar 2004 14:42:51 -0000
Subject: Industrial CFD Open Day at Reading University

CFD Outreach Initiative Open Day
Black Horse House, Reading University, Berkshire, UK
March 22nd, 2004
Contact Bette Byrne,, 01865 273 883

A one-day open meeting at the University of Reading to discuss, present and
offer advice on fluid dynamics, aimed at small and medium sized companies.
The open day will concentrate on the commercial advantages of CFD for small
companies by presenting case studies which illustrate how small businesses
have derived real commercial benefit from the application of CFD.


From: Ilia Braianov <>
Date: Mon, 1 Mar 2004 10:16:03 +0200 (WET)
Subject: Conference in Bulgaria on Numerical Analysis and Applications


JUNE 29-JULY 3, 2004

This conference is third in a series (June 24-28, 1996 and June 11-15, 2000,
for more information see

As in the previous ones, the main tracks of the conference are:
1. Numerical Linear Algebra
2. Numerical Methods for Differential Equations
3. Numerical Modeling
4. High Performance Scientific Computing


Inner-Outer Iterations

Numerical Methods for Interface Problems
Organizers: Zhilin Li:
Serge Nicaise:

Numerical Methods in Optimal Control and Differential Inclusions
Organizers: Tzanko Donchev:
Elza Farkhi:

Some Trends in Modeling of Non-linear Physical Problems
Organizers: T. Boyadjiev:
M. Todorov:

List of Plenary and Key lecturers, who already accepted invitation of
the Org. Committee: G. Akrivis (Greece), O. Axelsson (The Netherlands),
F. Chaitin -Chatelin (France), I. Dimov (Bulgaria), E. G. D'yakonov (Russia),
I. Farago (Hungary), B. S. Jovanovic (Serbia-Montenegro), M. Kaschiev
(Bulgaria), R. Lazarov (USA), Z. Li (USA), V. Makarov (Ukraine), P. Matus
(Belarus), S. Nicaise (France), I. V. Puzynin (Russia), H-G. Roos
(Germany), L. Sevastianov (Russia), V. Shidurov (Russia), V. Thomee
(Sweeden), E. Tyrtyshnikov (Russia),P. Vabishchevich (Russia)

Organizing Committee: L. Vulkov* (Chairman), I. Angelova, I. Brayanov, J.
Kandilarov, S. Karakoleva, M. Koleva, Z.Li, V. Pavlov, N. Strateva, K. Zlateva

Conference secretary
Miglena Koleva

Address: RU"A.Kunchev"
Department of Applied Mathematics and Informatics
Studentska str.8, 7017 Rousse

tel: +359(0)82/ 888 725 Fax:


Conference WWW site:


From: Tammy Kolda <>
Date: Tue, 02 Mar 2004 13:56:06 -0800
Subject: Workshop in Palo Alto on Tensor Decompositions

Workshop on Tensor Decompositions
July 19 - 23, 2004
American Institute of Mathematics Research Conference Center
Palo Alto, California

Organized by
Gene Golub, Tamara Kolda, James Nagy, and Charles Van Loan.

This workshop, sponsored by AIM and the NSF, will consider
mathematical problems of tensor decomposition. Though higher-order
tensor (also known as multidimensional, multi-way, or n-way array)
decompositions have been around for more than three decades, the door
is now opening on greater mathematical understanding and new
applications. Previously, this topic has been the domain of
researchers in psychometrics and chemometrics. Now, however,
computationally oriented mathematicians have begun to take an interest
and envision many more potential applications ranging from image and
signal processing to data mining and more. The challenge is to find
ways to extend these methods to larger data sets, i.e., data sets with
thousands to millions of entries. This will require advances in the
theory and computation of higher-order tensor decompositions.

For more details please see the workshop announcement page:

Space and funding is available for a few more participants. If you
would like to participate, please apply by filling out the on-line
form (available at the link above) no later than April 19, 2004.
Applications are open to all, and we especially encourage women,
underrepresented minorities, junior mathematicians, and researchers
from primarily undergraduate institutions to apply.

Before submitting an application, please read the ARCC policies
concerning participation and financial support for participants.

The AIM Research Conference Center (ARCC) hosts focused
workshops in all areas of the mathematical sciences. ARCC
focused workshops are distinguished by their emphasis on
a specific mathematical goal, such as making progress on
a significant unsolved problem, understanding the proof of
an important new result, or investigating the convergence
between two distinct areas of mathematics.

For more information about ARCC, please visit


From: John Butcher <>
Date: Wed, 3 Mar 2004 18:52:26 +1300 (NZDT)
Subject: Workshop in New Zeland on Computational Differential Equations

Workshop on
Computational Partial and Ordinary Differential Equations
(Final announcement)
The University of Auckland, New Zealand
21 - 23 April 2004


The purpose of this workshop is to investigate the relationship between
numerical methods for partial and for ordinary differential equations.
It is hoped that new insights will be found into the computational needs
of modelling using complex partial differential systems and the use of
novel methods for time stepping based on stiff ordinary differential
equation systems.

Sponsored by:

The New Zealand Institute of Mathematics and its Applications

The invited speakers are:

Michael Baines, University of Reading, England
Igor Boglaev, Massey University, New Zealand
Joseph Flaherty, Rensselaer Polytechnic Institute, USA
Zahari Zlatev, National Environmental Research Institute, Denmark


Invited lectures and contributed lectures

Registration by e-mail and enquiries:

John Butcher,
Helmut Podhaisky,


Registration by e-mail: 15 March 2004
Offers to present papers: 15 March 2004
Abstracts in LaTeX or TeX: 31 March 2004


From: Jun Zhang <>
Date: Wed, 3 Mar 2004 11:51:57 -0500 (EST)
Subject: Workshop in Beijing on Computational Linear Algebra

Workshop on Computational Linear Algebra
Tsinghua University, Beijing, China
June 12, 2004

We are organizing a one day workshop on computational
linear algebra at Tsinghua University, Beijing, China,
on Saturday, June 12, 2004.

The purpose of this workshop is to discuss some recent
development in computational linear algebra, focusing
on solution of linear systems, eigenvalue computation,
and high performance computing. Topics include, but are
not limited to, iterative methods, preconditioning,
high performance solvers, applications, etc., for
linear system and sparse matrices.

The workshop will be informal in nature. No registration
is necessary, no fees are collected. Everyone is welcome
to attend. If you are interested in giving a talk, please
send an e-mail to either one of the organizers. We plan
to have 6 to 12 talks. Up-to-date
information about the workshop can be found at

We hope to see you in Beijing on June 12, 2004.

Zhongxiao Jia, Tsinghua University (
Jun Zhang, University of Kentucky (


From: Kirsten Wilden <>
Date: Wed, 03 Mar 2004 14:37:38 -0500
Subject: ACM-SIAM Symposium on Discrete Algorithms

ACM-SIAM Symposium on Discrete Algorithms (SODA05)

Conference Program Chair: Adam Buchsbaum, AT&T Labs- Research
Location: Sheraton Vancouver Wall Center Hotel, Vancouver, British Columbia
Dates: January 23-25, 2005

The Call for Presentations will be available in April 2004 at

For additional information, contact SIAM Conference Department at


From: Douglas N. Arnold <>
Date: Wed, 03 Mar 2004 21:04:57 -0600
Subject: Opportunities at the IMA

Opportunities at the Institute for Mathematics and its Applications
for this summer and next year. Application deadlines are near.


Spend 9 to 12 months at the IMA including the program Mathematics of
Materials and Macromolecules: Multiple Scales, Disorder, and
Singularities which runs from September 2004 through June 2005 and
connects to all sorts of math including differential and integral
equations, dynamical systems, statistical mechanics, probability,
scientific computing and numerical analysis, and geometry. The IMA will
supply 50% of salary upt to $45K maximum and the home institution
commits to providing the remaining salary and all benefits.


Intensive two week course taught by Herbert Edelsbrunner and John
Harer on Computational Toplogy with applications to molecular
biology and geometric modeling. Aimed at math faculty, but
without specialized prerequisites. IMA pays travel and local

Also, at any time we are reviewing applications for:


Pays local expenses for visits of 1 month to 1 year to participate
in the IMA program Mathematics of Materials and Macromolecules.


From: Linda Petzold <>
Date: Sat, 28 Feb 2004 16:21:16 -0800 (PST)
Subject: Faculty Position, University of California, Santa Barbara

Faculty Position
Computational Science and Engineering
University of California, Santa Barbara

The College of Engineering at the University of California, Santa
Barbara is in the process of developing a multidisciplinary
college-wide program in Computational Science and Engineering (CSE).
An objective of the CSE program is to build strengths in the core
areas of numerical methods, algorithms and software tools for
scientific computation, high performance computing and
communications, and scientific visualization, as well as to establish
collaborative linkages in the applied areas of CSE such as
computational fluid dynamics, quantum computation, nanoelectronics,
control systems, computational materials, etc.

Applications are invited from outstanding candidates at all levels.
Senior candidates should have an established international reputation
in an area within the broad framework of the program, and a track
record of interdisciplinary collaboration. The College is especially
interested in candidates who can contribute to the diversity and
excellence of the academic community through research, teaching and

Please send a complete application consisting of a curriculum vita
and the names and addresses of at least four professional references
to: Search Committee in Computational Science and Engineering, Dean's
Office, College of Engineering, University of California, Santa
Barbara, CA 93106-5130. The deadline for applications is April 30,
2004. UCSB is an equal opportunity, affirmative action employer.


From: Aubrey Poore <>
Date: Thu, 4 Mar 2004 08:02:24 -0700
Subject: Staff Positions at Numerica


Numerica Corporation of Fort Collins, Colorado seeks highly motivated
engineers, scientists, statisticians, computer scientist, and applied
mathematicians to work in areas of data/information fusion, signal
processing, resource management, and multiple target tracking. MS (PhDs
preferred) and US Citizenship is required. The available positions can be
found at

Please forward resume to Jeff Poore, Numerica Corp, P.O. Box 271246, Fort
Collins, CO 80527-1246. (Email: JBPoore@Numerica.US)

Numerica is an Equal Opportunity Employer.


From: David Bruhwiler <>
Date: Thu, 4 Mar 2004 17:35:10 -0700 (Mountain Standard Time)
Subject: Staff Positions at Tech-X Corp

Tech-X Corp. has open positions for PhD level researchers in the
areas of computational physics and computer science.

Point your browser to URL
to see the job announcements for these positions.

Best regards,


From: Jocelyne Erhel <>
Date: Fri, 05 Mar 2004 12:08:56 +0100
Subject: Postdoctoral Positions at INRIA, France


The INRIA research center is offering 46 post-doctoral positions in
all fields of computer science and applied mathematics.
Topics are available on line.

Subject proposed by the Sage team ( at
Larse sparse parallel linear solvers for hydrogeology simulations

Candidates should sent their application by April 2th, 2004 either to
the researcher responsible of each topic or to
the head of the research team the candidate is willing to join.
Applications should include:

* The selected topic, or a detailed scientific program written by
the candidate
* A curriculum vitae
* A letter of candidature which includes employment prospects
following the post-doctoral period at INRIA
* A copy of the doctoral dissertation
* If possible, doctoral committee reports and one to three letters
of recommendation
* Please specify if you are applying for several subjects.

Main features
- 25800 EUROS (Gross salary)
- 12 months position
- Social security included
- Starting date: from June 2004

FINAL SELCTION: May, 3rd, 2004


From: Jean-Baptiste FAURE <>
Date: Tue, 02 Mar 2004 16:07:08 +0100
Subject: Postdoctoral Position at Cemagref Lyon

Applicants will reach a multidisciplinary research team
(hydraulic, hydroinformatic and applied mathematics) based in
Lyon and Grenoble, France.
The post will be mainly in the CEMAGREF Lyon, Hydraulic and
Hydrology research unit and alse in the project-team IDOPT,
INRIA Grenoble.

A PhD in fluid mechanics / hydraulics or in applied
mathematics - scientific computation is required.
Experience in automatic differentiation, hydroinformatics or
identification - data assimilation is desirable.

The contract (restricted to non-French citizen) will have a duration of 10
months with 20 000 - 25 000 Euros.

The successful candidate will be a willing and effective
communicator and committed to team collaboration.

i) Differentiate two hydraulic softwares based on shallow
water models (flood models). In others words, generate
the adjoint codes.
Softwares differentiated: Cemagref softwares Mage and
Rubar20 (Fortran, finite difference and finite volume
Use of the TAPENADE automatic differentiation tool(INRIA

ii) Exploitation of the adjoint codes in collaboration
with hydraulicians (sensitivity analysis,uncertainty
propagation, identification problems).

Applications with full CV giving names and addresses of two
referees should be sent to:

Web sites :
CEMAGREF LYON, Hydraulic and Hydrology research unit,
Lyon :


From: Science Direct <>
Date: Tue, 2 Mar 2004 06:31:37 -0500 (EST)
Subject: Contents, Linear Algebra and its Applications

Linear Algebra and its Applications Volume 380, (15 March 2004)

Special section dedicated to the GAMM workshop Applied and Numerical Linear
Algebra with special emphasis on Numerical Methods for Structured and Random
Matrices, Pages 1-2
Andreas Frommer , Volker Mehrmann and Reinhard Nabben

On doubly structured matrices and pencils that arise in linear response theory,
Pages 3-51
Christian Mehl , Volker Mehrmann and Hongguo Xu

The behavior of symmetric Krylov subspace methods for solving Mx=(M-[gamma]I)v,
Pages 53-71
V. Simoncini and M. Pennacchio

On finite dimension exchange algorithms, Pages 73-93
Holger Arndt

Generalized Hessenberg matrices, Pages 95-105
Miroslav Fiedler and Zdenk Vavin

A unified approach to fast image registration and a new curvature based
registration technique, Pages 107-124
Bernd Fischer and Jan Modersitzki

A note on the second largest eigenvalue of a tree with perfect matchings,
Pages 125-134
Ji-Ming Guo and Shang-Wang Tan

Representability of convex sets by analytical linear inequality systems,
Pages 135-150
Daniel A. Jaume and Ruben Puente

Generalization of Flanders' theorem to matrix triples, Pages 151-171
J. Gelonch and C. R. Johnson

On graphs with at most three Laplacian eigenvalues greater than or equal to two,
Pages 173-184
Miroslav Petrovi , Bojana Borovianin and Aleksandar Torgaev

Additive preservers of rank-additivity on the spaces of symmetric and alternate
matrices, Pages 185-198
Hong You and Xiao Min Tang

Inverse eigenproblems and associated approximation problems for matrices with
generalized symmetry or skew symmetry, Pages 199-211
William F. Trench

The N-matrix completion problem under digraphs assumptions, Pages 213-225
C. Mendes Araujo , Juan R. Torregrosa and Ana M. Urbano

A unified treatment for the matrix Stieltjes moment problem, Pages 227-239
Yong-Jian Hu and Gong-Ning Chen

Generic canonical form of pairs of matrices with zeros, Pages 241-251
Tat'yana N. Gaiduk and Vladimir V. Sergeichuk

Subresultants and locally nilpotent derivations, Pages 253-261
M'hammed El Kahoui

Some partial inverse eigenvalue problems: recovering diagonal entries of
symmetric matrices, Pages 263-270
D. Paul Phillips

Linear Algebra and its Applications Volume 381, (1 April 2004)

System theoretic based characterisation and computation of the least common
multiple of a set of polynomials, Pages 1-23
Nicos Karcanias and Marilena Mitrouli

Conjugacy invariants of , Pages 25-35
B. Foreman

Inertia theorems for pairs of matrices, Pages 37-52
Cristina Ferreira and Fernando C. Silva

A property concerning the Hadamard powers of inverse M-matrices, Pages 53-60
Shencan Chen

A limit theorem for sets of stochastic matrices, Pages 61-76
Anne Condon and Michael Saks

On the powers of a vectorial matroid - an equivalence relation, Pages 77-95
Rosario Fernandes

A decreasing sequence of upper bounds on the largest Laplacian eigenvalue of a
graph, Pages 97-116
Oscar Rojo and Hector Rojo

The k-edge connected subgraph problem I: Polytopes and critical extreme points,
Pages 117-139
M. Didi Biha and A. R. Mahjoub

A least squares approach to reduce stable discrete linear systems preserving
their stability, Pages 141-163
Sven Feldmann and Patrick Lang

Positive extension problems for a class of structured matrices, Pages 165-195
Vladimir Bolotnikov and Paul A. Smith

Spectral shorted matrices, Pages 197-217
Jorge Antezana , Gustavo Corach and Demetrio Stojanoff

Parametric extensions of Shannon inequality and its reverse one in Hilbert
space operators, Pages 219-235
Takayuki Furuta

Some facets of the polytope of even permutation matrices, Pages 237-244
Jeffrey Hood and David Perkinson

Eventually nonnegative matrices are similar to seminonnegative matrices,
Pages 245-258
Sarah Carnochan Naqvi and Judith J. McDonald

Numerical ranges of unbounded operators arising in quantum physics,
Pages 259-279
N. Bebiano , R. Lemos and J. da Providencia


From: Raimondas Ciegis <>
Date: Thu, 4 Mar 2004 08:52:33 +0200 (WET)
Subject: Contents, Mathematical Modelling and Analysis


The Baltic Journal
on Mathematical Applications,
Numerical Analysis and Differential Equations

ISSN 1392-6292
Electronical edition:

Volume 9, Number 1, 2004


K. Batrakov, S. Sytova
Modelling of quasi-Cherenkov electron beam instability in periodical
p. 1-8

J. Dhar
A prey-predator model with diffusion and a supplementary resource for the
prey in a two-patch environment
p. 9-24

O. Dumbrajs, H. Kalis, A. Reinfelds
Numerical solution of single mode gyrotron equation

R. Gar{\v s}ka, I. Kr{\= u}minien{\. e}
Spatial analysis and prediction of Curonian lagoon data with Gstat
p. 39-50

J. Sieber, M. Rad{\v z}i{\= u}nas, K. R. Schneider
Dynamics of multisection semiconductor lasers
p. 51-66

J. Socolowsky
On the existence and uniqueness of two-fluid channel flows

M. Tarang
Stability of the spline collocation method for second order Volterra
integro-differential equations


From: Vladik Kreinovich <>
Date: Sat, 6 Mar 2004 16:44:04 -0700 (MST)
Subject: Contents, Reliable Computing

Reliable Computing
Volume 10, issue 3, 2004
Mathematical Research

Slope Intervals, Generalized Gradients, Semigradients, Slant
Derivatives, and Csets
Humberto Munoz, R. Baker Kearfott

Integral Approximation of Rays and Verification of Feasibility
Waltraud Huyer, Arnold Neumaier

On a Refined Analysis of Some Problems in Interval Arithmetic Using
Real Number Complexity Theory
Klaus Meer

A Method for Outer Interval Solution of Linear Parametric Systems
Lubomir V. Kolev

Letter to the Editor

Fast Multiplication of Interval Matrices (Interval Version of
Strassen's Algorithm)
Martine Ceberio, Vladik Kreinovich


Interval-Related Talks at InTech'03


End of NA Digest