### Today's Editor:

- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Daniel Pierce Honored
- Networks via Mean Value Analysis
- Numerical Algorithms for Generalized Eigenvalue Problem
- F90 Compiler Performance Benchmark Project
- CUTE -- Constrained and Unconstrained Testing Environment
- Guranteed Accuracy in Numerical Linear Algebra
- New Book on Fractal Image Compression
- South African Symposium on Numerical Mathematics
- Mathematics of Computation 1943-1993
- Inverse Problems Conference in Austria
- Workshop on Reliability Computations
- European Multigrid Conference
- Position at University of Virginia
- Position at Heriot-Watt University
- Conttents: IMA Numerical Analysis
- Contents: Linear Algebra and its Applications

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

From: Biswa Datta <dattab@math.niu.edu>

Date: Tue, 9 Mar 93 13:17:29 CST

**Subject: Daniel Pierce Honored**

DANIEL PIERCE of Boeing Computer Services is the recipient of the 1993

Outstanding Young Alumni Award from Northern Illinois University.

Dan received his B.S and M.S degrees from NIU, and wrote his master thesis

under the direction of Biswa Datta. He obtained his Ph.D from North

Carolina University and wrote his Ph.D dissertation under the direction

of Robert Plemmons.

Dan is currently a Senior Principal Scientist at Boeing Computer Services.

CONGRATUALTIONS, DAN !

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

From: Chris Skiscim <SKISCIMC@WMAVM7.VNET.IBM.COM>

Date: Tue, 9 Mar 93 18:17:36 EST

**Subject: Networks via Mean Value Analysis**

If anyone has an efficient implementation for the exact or approximate

solution of queueing networks (open and closed chains) by Mean Value

Analysis, please contact me. I am attempting to implement MVA for

client-server applications involving a large numbers of chains and

customers. Thanks in advance.

Chris Skiscim

skiscimc@wmavm7.vnet.ibm.com

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

From: Alex Stankovic <astankov@banat.coe.northeastern.edu>

Date: 07 Mar 1993 19:54:10 -0500 (EST)

**Subject: Numerical Algorithms for Generalized Eigenvalue Problem**

I would be very grateful for suggestions and pointers regarding the

numerical methods for the generalized eigenvalue problem (possibly

large scale).

Specifically, I am looking for review and research papers on the topic,

and I am aware of the standard references (Goluv&Van Loan, Horn&Johnson).

Thanks in advance for any help,

Alex Stankovic

astankov@hilbert.coe.northeastern.edu

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

From: John Prentice <john@aquarius.unm.edu>

Date: Fri, 12 Mar 93 18:41:12 MST

**Subject: F90 Compiler Performance Benchmark Project**

For some months I have been working on a set of Fortran 90 codes for the

purpose of performing a benchmark of the ParaSoft, NAG, and Pacific Sierra

Research Fortran 90 compilers (or translators, if you prefer). The

thrust of this project is to determine the performance of these compilers

on a variety of numerical problems, many of which are actual production

codes. I am performing my benchmark runs on a single processor Sparc 10.

I am nearing completion of my F90 performance benchmark suite and will soon

be running the final benchmark tests and writing up the results. With that

in mind, I am assembling an e-mail list to keep people up to date on this

project and for dissimination of the results. If you are interested in

being on this list, please send me some e-mail letting me know. If you know

of any other people who might be interested in this project, please send me

their e-mail address and I will contact them.

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

From: Philippe Toint <pht@math.fundp.ac.be>

Date: Thu, 11 Mar 93 14:34:24 +0100

**Subject: CUTE -- Constrained and Unconstrained Testing Environment**

CUTE is now available

CUTE (Constrained and Unconstrained Testing Environment) is a set of Fortran

subroutines, system tools and test problems in the area of nonlinear

optimization and nonlinear equations. Its purpose is to

- provide a way to explore an extensive collection of problems (over 500

different test problems today)

- provide a way to compare existing packages (MINOS, LANCELOT, OSL, ...)

- provide a way to use a large test problem collection with new packages,

- provide motivation for building a meaningful set of new interesting test

problems,

- provide ways to manage and update the system efficiently, and

- do all the above on a variety of popular platforms (SUNs, DEC, IBM

workstations, CRAY, ...)

CUTE has been written by I. Bongartz, A.R. Conn (both at IBM, Watson Research

Center), Nick Gould (CERFACS, France) and Ph. Toint (FUNDP, Belgium). A LaTeX

manuscript detailing the package may be obtained by email from any of the

authors. It is also included in the distribution.

CUTE is written is standard ANSI Fortran 77. Single and double precision

versions are available. Machine dependencies are carefully isolated and

easily adaptable. Automatic installation procedures are available for DEC

ULTRIX, DEC/OSF/1, SUN SunOS, CRAY UNICOS and IBM AIX.

The package may be obtained in one of two ways. Firstly, the reader can

obtain CUTE electronically (and free of charge) via an anonymous ftp call to

the account at the Rutherford Appleton Laboratory camelot.cc.rl.ac.uk

(Internet i.d. 130.246.8.61, in the directory pub/cute), or at Facultes

Universitaires Notre-Dame de la Paix (Namur) thales.math.fundp.ac.be (Internet

i.d. 138.48.4.14, in the directory cute). We request that the userid is given

as the password. This will serve to identify those who have obtained a copy

via ftp.

Secondly, the package can be obtained on a floppy disk or magnetic tape at a

minimal price, intended to recoup the costs of media, packaging, preparation

and courier delivery. Potentially interested parties should contact Ph. Toint

for obtaining a suitable order form.

Ingrid Bongartz bongart@watson.ibm.com

Andy Conn arconn@watson.ibm.com

Nick Gould gould@cerfacs.fr

Philippe Toint pht@math.fundp.ac.be

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

From: S. M. Rump <Rump@tu-harburg.dbp.de>

Date: Tue, 9 Mar 1993 14:55:02 +0100

**Subject: Guranteed Accuracy in Numerical Linear Algebra**

Viktor Kostin reviewed the book "Guaranteed Accuracy in Numerical

Linear Algebra" by S.K.Godunov et al. He mentions that the

methods described over there are almost unknown to English

speaking readers.

There are a number of books on the subject covering numerical

linear algebra, nonlinear equations, global optimization,

differential equations and others. For example

Adams.,E.,Ansorge,R.,Grossmann,Ch.,Roos,H.-G.: Discretization in

Differential Equations and Enclosures, Akademie-Verlag, Vol.

36, Berlin 1987.

Alefeld,G.,Herzberger,J.: An Introduction to Interval

Computations, Academic Press, New York 1983.

Ames,W.F.(Ed.): Numerical and Applied Mathematics, J.C.Baltzer

Scientific Publications, Basel 1989.

Brezinski,C.,Kulisch,U.(Eds): Computational and Applied

Mathematics I - Algorithms and Theory, Proceedings of the 13th

IMACS World Congress, Dublin, Ireland, Elsevier Science

Publishers 1992.

Herzberger,J.,Atanassova,L.(Eds.): Computer Arithmetic and

Enclosure Methods, Elsevier Science Publishers, Amsterdam

1993.

Klatte,R.,Kulisch,U.,Neaga,M.,Ratz,D.,Ullrich,Ch.: Pascal-XSC -

Language Reference with Examples, Springer Verlag, Berlin,

Heidelberg, New York 1991.

Moore,R.E.(Ed.): Reliability in Computing: The Role of Interval

Methods in Scientific Computing,Academic Press, San Diego

1988.

Neumaier,A.: Interval Methods for Systems of Equations,

Cambridge University Press, Cambridge 1990.

Ullrich,Ch.(Ed.): Computer Arithmetic and Self-Validating

Numerical Methods,Academic Press, San Diego 1990.

This is an uncomplete (authors: please, don't blame me for not

being mentioned) list of the newer books, others are cited there.

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

From: Lyman Hurd <hurd@math.gatech.edu>

Date: Wed, 10 Mar 93 16:48:03 EST

**Subject: New Book on Fractal Image Compression**

I am pleased to announce the arrival of the book:

Fractal Image Compression

by Michael Barnsley and Lyman Hurd.

hardbound 244 pages, 16 color plates ISBN 1-56881-000-8

A sequel to Fractals Everywhere, Fractal Image Compression describes the

mathematics underlying the Fractal Transform an image compression method

discovered by Michael Barnsley and developed at Iterated Systems. Topics

include:

* Iterated Function Systems

* Local IFS and the Black and White Fractal Transform

* The Grayscale Fractal Transform

* Information Theory

* Huffman codes

* Arithmetic Codes

* JPEG Image Compression

Example programs in C are interspersed throughout the text.

Copies can be ordered directly from the publisher by the following methods:

1) Email: send a message to

kpeters@geom.umn.edu

for price and credit card information.

2) Mail:

AK Peters, Ltd.

289 Linden St.

Wellesley, MA 02181

3) Phone: (617) 235-2210.

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

From: WSKDPL <WSKDPL@puknet.puk.ac.za>

Date: Mon, 08 Mar 93 12:45

**Subject: South African Symposium on Numerical Mathematics**

19th South African Symposium on Numerical Mathematics

The Nineteenth South African Symposium on Numerical Mathematics,

organized by the South African Society for Numerical Mathematics (SANUM)

and the Department of Computer Science of the University of Natal, Durban,

will be held at the Protea Hotel, San Lameer, near Margate on the South

Coast, on 12, 13 and 14 July 1993. The Symposium offers numerical and

applied mathematicians an opportunity to discuss their research, establish

contacts and exchange ideas with other delegates.

Presentations of 20 minutes duration on any aspect of numerical

mathematics and its applications are hereby solicited. All presentations

submitted will be published in the unrefereed Proceedings after the

Symposium, subject to approval by the SANUM Committee.

The deadline for submission of titles and summaries of presentations

(one A4 page) as well as the necessary registration form and payment

is 17 May 1993.

In order to stimulate research among our younger colleagues, SANUM has

decided that an award will be made for the best paper presented at the

Symposium. This award is limited to candidates under the age of 35 years.

Please direct all queries to:

Dr Shirley Abelman

Secretary: SANUM

Dept. of Computational & Applied Mathematics

University of the Witwatersrand, Johannesburg

P O Wits

2050 South Africa

Tel: 27-11-7163298

Fax: 27-11-3397965

e-mail: 076ABNS@WITSVMA.WITS.AC.ZA

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

From: Walter Gautschi <wxg@cs.purdue.edu>

Date: Wed, 10 Mar 1993 09:12:13 -0500

**Subject: Mathematics of Computation 1943-1993 **

*THIRD ANNOUNCEMENT*: *MEETING AND CALL FOR PAPERS*

NOTE: This announcement differs from the preceding second announcement

only in the e-mail address to which inquiries with regard to

registration and housing should be directed.

Under the auspices of the American Mathematical Society (AMS), and

in celebration of the 50th anniversary of the journal Mathematics of

Computation, an international conference

MATHEMATICS OF COMPUTATION 1943-1993

A half-century of computational mathematics

devoted to all aspects of computational mathematics will be held on

the campus of the University of British Columbia, Vancouver, Canada,

August 9-13, 1993, immediately prior to the joint AMS/MAA/CMS Summer

Meeting. As part of the meeting there will be a two-session

minisymposium on Computational Number Theory dedicated to the memory

of D.H. Lehmer. Invited speakers will be presenting survey and state-

of-the-art lectures in plenary sessions. In addition there will be

poster sessions and 15-minute talk sessions for contributed papers.

The invited (and confirmed) speakers are:

James H. Bramble, Cornell University

Johannes Buchmann, Universitaet des Saarlandes

Margaret Cheney, Rensselaer Polytechnic Institute

Bjorn Engquist, University of California at Los Angeles

Donald Goldfarb, Columbia University

James N. Lyness, Argonne National Laboratory

J.C. Nedelec, Ecole Polytechnique Palaiseau

Andrew M. Odlyzko, AT&T Bell Laboratories

Frank W.J. Olver, University of Maryland

Linda R. Petzold, University of Minnesota

Carl Pomerance, University of Georgia

Larry L. Schumaker, Vanderbilt University

Hans J. Stetter, Technical University of Vienna

G.W. Stewart, University of Maryland

Roger Temam, Indiana University

The deadline for submission of contributed papers is April 1, 1993.

Abstracts should be prepared on AMS abstract forms (available at most

universities or obtainable from the AMS upon request) and should

indicate whether they are submitted for a poster session or for a short

talk session. They should be sent in duplicate to the Chairman of the

Organizing Committee. Decisions on acceptances will be made by May 1,

1993. All invited lectures and contributed papers are to appear (subject

to the usual reviewing procedures) in a Proceedings volume published

by the American Mathematical Society.

The deadline for registration/housing is June 6, 1993. Registration

and housing forms can be obtained from the Mathematics Meetings Service

Bureau, P.O. Box 6887, Providence, RI 02940-6887. There will be a

registration fee of $50.00. Inquiries with regard to registration and

housing should be directed to that address, or by e-mail to

wsd@math.ams.org, or tel: 401-455-4143. Other inquiries should be sent

to the Chairman of the Organizing Committee.

Sponsorship by the National Science Foundation is pending; additional

funds for travel and support are sought from the National Security

Agency and the Department of Energy.

The Organizing Committee: James H. Bramble

Walter Gautschi (Chairman)

Department of Computer Sciences

Purdue University

West Lafayette, IN 47907, USA

e-mail: wxg@cs.purdue.edu

Eugene Isaacson

Vidar Thomee

Hugh C. Williams

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

From: Heinz W. Engl <engl@indmath.uni-linz.ac.at>

Date: Thu, 11 Mar 1993 10:42:15 MEZ

**Subject: Inverse Problems Conference in Austria**

Between June 26 and July 2, 1994, a conference on

Inverse Problems will be held on Lake St.Wolfgang,

Austria. This conference will be the first one in a

series of conferences on inverse problems to be

organized for SIAM and GAMM by D.Colton (Delaware),

H.W.Engl (Linz), A.Louis (Saarbruecken), and

W.Rundell (Texas A&M). The local organizer for

the St.Wolfgang conference will be H.W.Engl.

More detailed information will follow later.

Prof.Dr.Heinz W. Engl E-Mail: engl@indmath.uni-linz.ac.at

Industriemathematik or na.engl@na-net.ornl.gov

Institut fuer Mathematik secretary: nikolaus@indmath.uni-linz.ac.at

Johannes-Kepler-Universitaet Phone: +43-(0)732-2468; ext.9219 or 693,

Altenbergerstrasse 69 secretary: 9220; home: +43-(0)732-245518

A-4040 Linz Fax: +43-(0)732-246810, attn.:Prof.Engl

Oesterreich / Austria Telex: 2-2323 uni li a

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

From: Valerie Fraysse <Valerie.Fraysse@cerfacs.fr>

Date: Thu, 11 Mar 1993 19:01:30 GMT

**Subject: Workshop on Reliability Computations**

CERFACS INRIA

Centre Europ\'een Institut National

de Recherche et de de Recherche

Formation Avanc\'ee et de en Informatique

en Calcul Scientifique et Automatisme

WORKSHOP ON RELIABILITY OF COMPUTATIONS

New trends in the assessment of quality for

numerical linear algebra software and algebraic processes.

Second Announcement

March 30--31, April 1 1993, TOULOUSE (FRANCE)

For an engineer or a researcher, having confidence in the results obtained

from large-scale computational codes and the robustness of the underlying

models is of the utmost importance. Indeed, the widespread availability of

supercomputers has replaced physical experimentation by intensive numerical

simulations, even for problems at the edge of instability.

Unfortunately, tools for obtaining information on the quality and the

reliability of computer results are rarely used in industrial environments.

However, there exist some new tools, developed in the framework of linear

algebra, which can offer the best possible solution to a given problem.

One has to discover and learn how to use them.

The aim of the workshop ``RELIABILITY OF COMPUTATIONS'' is then twofold :

* to present an overview of the new concepts influencing the design of

LAPACK, the Linear Algebra Library released in 1992,

* to show how the user can get meaningful information even from results

where all the digits can be wrong. Such computational problems are

considered so difficult that they are called ``impossible''.

List of speakers:

M. Arioli, IAN--CNR Pavia and CERFACS

J. C. Berg\`es, CNES

J. P. Boujot, CISI Ing\'enierie

T. Braconnier, CERFACS

F. Chatelin, THOMSON--CSF and CERFACS

J. Cullum, IBM Yorktown

V. Frayss\'e, CERFACS

S. Hammarling, NAG

N. Higham, University of Manchester

I. Ipsen, Yale University

B. K{\aa}gstr\"{o}m, University of Ume\aa

Organizing Committee: M. Arioli, IAN--CNR Pavia and CERFACS

F. Chatelin, THOMSON--CSF and CERFACS, I. S. Duff, Rutherford

Appleton Laboratory and CERFACS, V. Frayss\'e, CERFACS.

This workshop is organized by CERFACS with the support of INRIA and IBM.

Registration fees:

Regular participants : 2500 FF

Students : 1000 FF

The registration fees include : participation at the workshop,

breakfasts, lunches, coffee-breaks, a cocktail and relevant documentation.

Possibility for accomodation on the campus (47 FF per night).

Scientific coordination and registration :

CERFACS

Val\'erie Frayss\'e Tel : (33) 61 19 30 18

42 ave. G. Coriolis Fax : (33) 61 19 30 00

31057 Toulouse CEDEX Email : fraysse@cerfacs.fr

FRANCE

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

From: Piet Wesseling <witawes@dutinfh.tudelft.nl>

Date: Fri, 12 Mar 93 10:13:30 MET

**Subject: European Multigrid Conference**

EMG'93 EUROPEAN MULTIGRID CONFERENCE

July 6-9, 1993

Amsterdam

The Netherlands

Call for Registration

Following earlier conferences in 1981, 1985 and 1990, EMG'93, the fourth

European Multigrid Conference will be held in Amsterdam, July 6-9, 1993.

The conference aims at providing a forum for the presentation and

discussion of recent research in the general area of multilevel methods.

Participation will be worldwide.

Themes of the conference will range from basic research to industrial

applications, including but not limited to the following subjects:

* computational fluid dynamics,

* reservoir engineering,

* statistical physics,

* parallel computing,

* adaptive computing,

* numerical analysis of multigrid methods.

PROGRAM

The program of the fourth European Multigrid Conference will consist of

invited lectures in plenary sessions and some 50 selected presentations

in 2 parallel sessions. Program chairmen are P.W. Hemker (CWI/University

of Amsterdam) and P. Wesseling (Delft University of Technology).

Invited lectures will be given by:

D. Braess (Bochum, Germany), Multigrid for nonconforming finite elements

A. Brandt (Rehovot, Israel), Multiscale computations in physics and chemistry

C. Douglas (New Haven, USA), A generalized multigrid theory

L. Fuchs (Stockholm, Sweden), Multigrid methods for calculation

of flows in multi-components geometries

W. Hackbush (Kiel, Germany), The frequency-decomposition multigrid method

P. Lauwers (Bonn, Germany), Multigrid algorithms in lattice gauge theories

K. Stueben (Sankt Augustin, Germany), Adaptive multigrid on distributed

memory computers

S. Vandewalle (Leuven, Belgium), Multicomputer solution of parabolic problems

C.H. Venner (Enschede, The Netherlands), Multilevel solution of integral

and integro-differential problems

G. Wittum (Heidelberg, Germany), On robust multigrid methods

CONTRIBUTED PAPERS

The program of contributed papers will be made available through

anonymous ftp from "ftp.cwi.nl" (Conferences/EMG93) and mgnet

(caspar.cs.yale.edu). If you don't have ftp-facilities you may contact the

conference administrator (Beau) at fax +31-20-5924199 to get the program.

ORGANIZING COMMITTEE

P.W. Hemker

F. Snijders

P. Wesseling

S. van der Wolff

CONFERENCE ADMINISTRATOR

EMG'93 - European Multigrid Conference 1993

c/o CWI

Ms. Simone van der Wolff

P.O. Box 4079

1009 AB Amsterdam

The Netherlands

Tel. +31-20-5924189

Fax. +31-20-5924199

email: simone@cwi.nl

COMPLETE ELECTRONIC ANNOUNCEMENT

Available via e-mail from:

simone@cwi.nl

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

From: Lois Mansfield <lem@virginia.edu>

Date: Wed, 10 Mar 93 14:02:46 EST

**Subject: Position at University of Virginia**

The Department of Applied Mathematics in the School of Engineering and

Applied Science at the University of Virginia has a tenure-track opening

for an assistant professor in the area Numerical Analysis/Scientific

Computing/Mathematical Modelling. We seek candidates who are willing and

able to work with colleagues throughout the School of Engineering &

Applied Science in applying mathematics to the understanding of real-world

phenomena, especially to those problems that arise in modern technology.

That is, we seek candidates who demonstrate an interest in and potential

for mathematical modelling and the development and application of efficient

numerical methods for predicting the behavior of such models. Finally,

we seek candidates with a strong commitment to the education of both

undergraduates and graduates within an environment dedicated to engineering

and applied science.

Please send resumes and supporting materials to:

Chair of the Search Committee

Department of Applied Mathematics

Thornton Hall, University of Virginia

Charlottesville, VA 22903

The University of Virginia does not discriminate on the basis of race,

creed, gender, or physical disability. Applications from underrepresented

minorities are especially encouraged.

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

From: Dugald Duncan <dugald%cara.ma.hw.ac.uk@ib.rl.ac.uk>

Date: Thu, 11 Mar 93 08:28:47 GMT

**Subject: Position at Heriot-Watt University**

Research Associateship in Nonlinear Systems

Heriot-Watt University, Edinburgh, Scotland

Applications are invited for a postdoctoral research associateship

sponsored by the UK SERC. The research associate will work on

computational problems arising in the study of phase transformations in

solids under the direction of Professors J M Ball & O Penrose and

Dr. D B Duncan. A background in scientific computation or numerical

analysis is essential, and experience in partial differential equations,

solid mechanics or statistical physics would be an advantage.

The appointment will commence on 1 October 1993 and will be for a

period of 2-3 years at a starting salary of between 13,400-14,962

pounds on the RA 1A scale. The position will involve a small amount

of teaching duties.

Application forms, and further particulars, are available from the

Director of Personnel, Heriot-Watt University, Riccarton, Edinburgh,

Scotland, EH14 4AS to whom completed forms should be returned by 10

April 1993. Overseas applicants can instead send a curriculum vitae

and names of 3 referees, if desired by FAX (44-31-451 3249) or e-mail

(J.M.Ball@cara.ma.hw.ac.uk). Please quote reference number 08/93.

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

From: Iain Duff <isd@directory.rutherford.ac.uk>

Date: Mon, 8 Mar 93 18:20:09 GMT

**Subject: Conttents: IMA Numerical Analysis**

Contents of IMA Journal of Numerical Analysis.

Volume 13 Number 2.

Govaerts W and Pryce J D

Mixed block elimination for linear systems with wider borders

Papamichael N, Soares M J and Stylianopoulos

A numerical method for the computation of Faber polynomials

and starlike domains.

Atkinson K and Flores J

The discrete collocation method for nonlinear integral equations.

Pickering W M and Harley P J

FFT solution of the Robbins problem

Hoppe R H W

A globally convergent multi-grid algorithm for moving boundary

problems of two-phase Stefan type

Zhao N and Dai J

Uniformly third-order accurate TVNE interpolation

Humphries A R

Spurious solutions of numerical methods for initial value problems.

Torelli L and Vermiglio R

On the stability of continuous quadrature rules for differential

equations with several constant delays

Weiner R, Arnold M, Rentrop P, and Strehmel K

Patritioning strategies in Runge-Kutta type methods

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

From: Richard Brualdi <brualdi@math.wisc.edu>

Date: Thu, 11 Mar 93 07:29:29 CST

**Subject: Contents: Linear Algebra and its Applications**

Contents Volume 184

Chjan C. Lim (Troy, New York)

Nonsingular Sign Patterns and the Orthogonal Group 1

Vlastimil Ptak and Zdenek Vavrin (Prague, Czech Republic)

Bezout, Hankel, and Loewner Matrices 13

Bryan L. Shader (Laramie, Wyoming)

Convertible, Nearly Decomposable, and Nearly Reducible Matrices 37

Daniel Hershkowitz (Haifa, Israel)

The Relation Between the Jordan Structure of a Matrix and Its Graph 55

Roy Mathias (Minneapolis, Minnesota)

An Arithmetic-Geometric-Harmonic Mean Inequality Involving Hadamard Products 71

Jiang Zeng (Strasbourg, France)

A Bijective Proof of Muir's Identity and the Cauchy-Binet Formula 79

Bernard F. Lamond (Quebec, Canada)

An Efficient Basis Update of Asymptotic Linear Programming 83

Robert E. Hartwig (Raleigh, North Carolina) and Michael Neumann (Storrs,

Connecticut)

Bounds on the Exponent of Primitivity Which Depend on the

Spectrum and the Minimal Polynomial 103

Zhe-xian Wan (Lund, Sweden)

On the Orthogonal Invariants of a Subspace of a Vector

Space Over a Finite Field of Odd Characteristic 123

Zhe-xian Wan (Lund, Sweden)

On the Orthogonal Invariants of a Subspace of a Vector

Space Over a Finite Field of Even Characteristics 135

W. Hasselbarth (Berlin, Germany) and E. Ruch (Gottingen, Germany)

On the Extension of Linear Contractions: Some Results

of the Hahn-Banach Type 145

Roland W. Freund (Murray Hill, New Jersey) and homas Huckle (Wurzburg, Germany)

A Restricted Signature Normal Form for Hermitian Matrices,

Quasi-Spectral Decompositions, and Applications 165

Scott McCullough (Gainesville, Florida)

Minimal Separators of 2-Chordal Graphs 187

Michael I. Gil' (Beer Sheva, Israel)

On Inequalities for Eigenvalues of Matrices 201

Wang Xinmin (Beijing, People's Republic of China)

Generalized Stein-Rosenberg Theorems for the Regular

Splittings and Convergence of Some Generalized Iterative Methods 207

LeRoy B. Beasley (Logan, Utah) and Larry J. Cummings (Waterloo, Ontario, Canada)

The Structure of Generalized Permanent Semigroups 235

Bo-Ying Wang and Ming-Peng Gong (Beijing, People's Republic of China)

Some Eigenvalue Inequalities for Positive Semidefinite

Matrix Power Products 249

Cheng Wang, Dao-Sheng Zheng, Guo-Liang Chen, and

Shu-Qin Zhao (Shanghai, People's Republic of China)

Structures of p-Isometric Matrices and Rectangular Matrices

With Minimum p-Norm Condition Number 261

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

End of NA Digest

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