NA Digest Sunday, June 11, 2006 Volume 06 : Issue 24

Today's Editor:
Tamara G. Kolda
Sandia National Labs

Submissions for NA Digest:

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Information via email about NA-NET:

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From: Vadim Olshevsky <>
Date: Sun, 11 Jun 2006 14:52:49 -0400
Subject: Eugene Tyrtyshnikov elected member of Russian Academy of Sciences

Eugene Tyrtyshnikov
(RAS Institute of Numerical Mathematics and Moscow State University)
has been elected as a Corresponding Member of the Russian Academy of Sciences

Founded in 1724 by Peter I the Great, Russian Rossiiskaya Akademiya Nauk (RAS)
was opened in 1725 by his widow, Catherine I. It is the highest scientific
society and principal coordinating body for research in natural and social
sciences, technology, and production in Russia. The highly prestigious
life-long membership in the academy is by election, and members can be one of
three ranks ­ Academician, Corresponding Member, or Foreign Member. The
academy directs the research of other scientific institutions and institutions
of higher education, such as Steklov Institute of Mathematics and the
Institute of Numerical Mathematics. The Academy includes departments of
mathematics; physics; power engineering, mechanics, and control processes;
information science and computer technology; chemistry and materials; biology;
earth sciences; social sciences; and history and philology. Its membership is
more than 1,400, with roughly 700 corresponding members, 500 academicians, and
200 foreign members.


From: Endre Suli <>
Date: Sat, 10 Jun 2006 12:47:00 +0100 (BST)
Subject: 13th Leslie Fox Prize, Oxford, 22 June 2007: Call for papers


The Thirteenth Leslie Fox Prize meeting will take place on

Friday, June 22nd 2007
at the Oxford University Computing Laboratory.

Entries for the Thirteenth Leslie Fox Prize competition should now
be submitted.

Any person who is less than 31 years old on January 1st 2007 and has
not already won a first prize is eligible. Each entry should consist
of a paper, describing some of the candidate's research, that is
suitable for a 40-minute lecture at a numerical analysis symposium.
Whether or not the work has been published or accepted for publication
is irrelevant, but no person may submit more than one paper.
Candidates from previous competitions are encouraged to enter.

The entries will be considered by the Adjudicating Committee:

Endre Suli (University of Oxford, Chairman),
Andrew Stuart (University of Warwick),
Nick Higham (University of Manchester).

Particular attention will be given to the originality and quality of
each paper, and to the suitability of the material for a 40-minute
talk to a general audience of numerical analysts. Papers will be
selected by the Committee by mid-April 2007, for presentation at the
Leslie Fox Prize meeting. Only the papers that are presented at the
symposium will be eligible for awards but, subject to this restriction,
the Adjudicating Committee may award any number of first and second

- Entries should be received, by the Chairman, by January 31st 2007,
either electronically as a PDF or PostScript file or as three
hard copies by regular mail, at the address below.

- Each candidate should include a statement of her/his year of
birth and should indicate that she/he would be available to
present her/his paper at the symposium.

- A joint paper may be submitted by an individual candidate provided
that it is accompanied by a statement from the co-authors agreeing
to the submission and detailing the contribution of the candidate
to the paper.

- Travel funds are not generally available to assist candidates who
attend the symposium.

- The receipt of all entries will be acknowledged.

Any question on this notice should be addressed to a member of the
Adjudicating Committee.

Address for submissions:

Professor Endre Suli,
University of Oxford,
Computing Laboratory,
Wolfson Building,
Parks Road,
Oxford OX1 3QD,
United Kingdom



From: "Erik Boman" <>
Date: Wed, 31 May 2006 17:11:29 -0600
Subject: Release of Zoltan 2.0

We are pleased to announce that version 2.0 of Zoltan, a library for parallel
data management and load-balancing, is now available for download at

The Zoltan library includes a suite of parallel algorithms for static and
dynamic partitioning of problems over sets of processors. Zoltan is used in
many scientific computing applications, such as adaptive finite element
computations, particle methods, and multiphysics simulations. Zoltan contains
geometric methods (like Recursive Coordinate Bisection), interfaces to popular
graph partitioners, and new parallel hypergraph partitioners.

Major new features in version 2.0 include:
+ Parallel hypergraph partitioning
+ Parallel graph coloring (distance-1 and -2)
+ Multiconstraint geometric partitioning (RCB and RIB)
+ Degenerate geometry detection
+ C++ interface

Zoltan's parallel hypergraph partitioner is of special interest. Hypergraph
models usually represent communication volume in parallel applications more
accurately than graph models. Zoltan's hypergraph partitioner runs in
parallel and provides functionality similar to serial hypergraph partitioners
PaToH and hMetis.

Zoltan is designed to be both flexible and extensible. Its easy-to-use
interface makes it ideal for application developers who want to experiment
with a variety of load-balancing algorithms. Zoltan also contains several
tools for parallel data management, including a high-level unstructured
communication package and a distributed data directory.

Zoltan provides interfaces for C, C++ and Fortran90/95. With all communication
done through the MPI library, it is portable to many different
architectures. Zoltan is released under the terms of the GNU Lesser General
Public License.

For more information:
+ See .
+ Email questions to zoltan (at) .

The Zoltan development team:

Erik Boman, Karen Devine, Lee Ann Fisk, Robert Heaphy
Sandia National Laboratories, NM

Umit Catalyurek, Doruk Bozdag
Ohio State University


From: Evgenii Rudnyi <>
Date: Fri, 2 Jun 2006 15:51:00 +0200
Subject: Benchmarks for Trabecular Bone Micro-Finite Element Models

Dear colleague,

Thanks to Prof van Rietbergen, high dimensional bone models are now
available from from Oberwolfach model reduction benchmark collection

The system dimension changes from about 100 thousands to 12 million. In
our experience, it is a good means to drive your software and hardware
to their limits.

Best wishes,

Evgenii Rudnyi


From: "Mathews, John" <mathews@Exchange.FULLERTON.EDU>
Date: Sat, 3 Jun 2006 17:33:50 -0700
Subject: New book: Complex Analysis for Mathematics and Engineering

New from Jones and Bartlett Publishers, Inc.

Complex Analysis for Mathematics and Engineering, 5th, Ed.
John H. Mathews and Russell W. Howell

Revised and updated, the new Fifth Edition of Complex Analysis for
Mathematics and Engineering presents a comprehensive, student-friendly
introduction to Complex Analysis. Its clear, concise writing style
and numerous applications make the foundations of the subject matter
easily accessible for students and proofs are presented at an elementary
level that is understood by students with a sophomore calculus background.
Believing that mathematicians, engineers, and scientists should be exposed
to a careful presentation of mathematics, attention to topics such as
ensuring required assumptions are met before the use of a theorem or
algebraic operations are applied. A new chapter on Z-Transforms and
Applications provides students with a current look at Digital Filter
Design and Signal Process.

Visit the author’s extensive website:


From: Joe Pasciak <>
Date: Wed, 07 Jun 2006 14:28:06 -0500
Subject: IMACS meeting on iterative methods in scientific computing, Nov 06

8th IMACS international symposium on iterative methods in scientific
computing to be held on November 14-17, 2006 at Texas A+M University.

Meeting topics include:
* Nonlinear systems
* Large sparse linear systems
* Large-scale eignproblem computations
* Preconditioning
* Multigrid and multilevel methods
* Domain decomposition
* Krylov subspace methods
* High-performance and parallel computation
* Applications

For more information, visit


From: Klaus Weihrauch <>
Date: Mon, 5 Jun 2006 09:52:20 +0200 (CEST)
Subject: CCA 2006, Computability and Complexity in Analysis, Nov 06

CCA 2006
Third International Conference

November 1-5, 2006,
Gainesville, Florida, USA

Submission deadline: July 2, 2006
Notification: August 1, 2006
Camera-ready version: September 1, 2006
Tutorials: November 1-2, 2006
Main conference: November 3-5, 2006


From: AndrGagalowicz <>
Date: Fri, 09 Jun 2006 16:30:33 +0200
Subject: MIRAGE2007, Mar 07

The third version of the MIRAGE conference (MIRAGE2007) which
will be held in Paris bertween the 26th and the 30th of March 2007.
Mirage 2007 is an international conference with focus on Computer
Vision/Computer Graphics collaboration techniques involving image
analysis/synthesis approaches.
the conference web site is <>

André Gagalowicz
Chairman of MIRAGE2007 conference


From: "Yuan Jinyun" <>
Date: Sun, 11 Jun 2006 13:38:29 -0300
Subject: Foz2006 - Congress on Mathematics and its Applications (2nd call), Aug 06

Foz2006 - Congress on Mathematics and its Applications will be hold in Foz
do Iguacu, Brazil , Aug. 7-11, 2006. The congress consists of plenary talks,
invited talks and contribution talks at 12 mini-symposiuns. Please make your
registration before July 20 if you like to participate the congress because
the congress location is inside of the biggest hydropower plant (ITAIPU
Technology Park) in the world which requires early registration to guarantee
your entrance. More information can be found at

Yuan Jin Yun


From: "Prof. T. Tang" <>
Date: Wed, 7 Jun 2006 17:38:59 +0800 (HKT)
Subject: ICOSAHOM 2007 - Call for Minisymposium proposals, Jun 07

ICOSAHOM 2007 -- Call for Minisymposium proposals

7th International Conference on Spectral and High-Order Methods (ICOSAHOM'07)
June 18-22, 2007, Beijing

The 7th International Conference on Spectral and High Order Methods (ICOSAHOM)
will continue a tradition established through the organization of the 1st
ICOSAHOM by C. Canuto and A. Quarteroni in Como, Italy in 1989. This conference
continues to be a main conference venue where significant advances and new
applications of high-order accurate methods for solving PDE's are presented.

Conference themes include but are not limited to spectral methods, high-order
finite difference and finite element methods, h-p finite element methods,
discontinuous Galerkin methods, ENO/WENO methods, high-order methods for
integral equations, and wavelet based methods.

Applications include problems appearing in electromagnetics, fluid and
structural dynamics, climate modeling, inverse problems, efficient solvers
and preconditioners for high-order methods, efficient time-stepping techniques,
and parallel and computational aspects of spectral and high-
order methods.

An integral part of ICOSAHOM'04 will be topic-specific minisymposia, following
a tradition that encompasses all previous ICOSAHOM conferences. The purpose of
these minisymposia are several, e.g., presentation of new and exciting
developments within the scope of the conference, new areas of applications in
the sciences and engineering, and to emphasize areas of particular recent
activity and progress.

We now invite interested reseachers to submit extended abstract for papers and
minisymposia. The deadlines are

Dec 15, 2007 - Minisymposia topics
Jan 15, 2007 - Abstracts

Guidelines for this can be found on the conference webpage

Also, some funds are available for the partial support of students,
postdocs, young reseachers and underrepresented minorities to
attend the conference. Guidelines for applying for these can likewise
be found on the conference webpage.

Best regards

Zhong-Ci Shi (Chair) Chinese Academy of Sciences
Zhiming Chen Chinese Academy of Sciences
Tao Tang Hong Kong Baptist University


From: Marc Van Barel <>
Date: Fri, 02 Jun 2006 08:23:22 +0200
Subject: Bill Gragg's 70th birthday - special issue of JCAM

As was already posted in an earlier NA-digest, a series of talks is
planned on Friday and Saturday, November 3-4, 2006, at the Naval
Postgraduate School in Monterey, California, that relate to Bill
Gragg's many areas of contribution and interest. The dates are chosen
to be close to Bill Gragg's 70th birthday. For more information, see

We are also planning a special issue of the Journal of Computational and
Applied Mathematics dedicated to Bill Gragg on this occasion. Submissions
should be related to areas to which Bill Gragg has contributed, but are
not limited to participants of the meeting. Submissions can be sent
to Greg Ammar or Marc Van Barel. Each submission should be between
10 and 20 pages. The deadline for submissions is January 31, 2007.
The guest editors for this special issue are

Greg Ammar
Carlos Borges
Lothar Reichel
Marc Van Barel


From: Peter Coveney <>
Date: Mon, 5 Jun 2006 13:07:33 +0100
Subject: Job advertisement, Univ. College London

University College London

Software Developer for Grid Systems

Applications are invited for the position of Software Developer within the
Centre for Computational Science at UCL. This EPSRC-funded post will provide
software development of a new security framework for computational grid
environments. The appointee will be based at the University of Cambridge as
this is part of a distributed collaboration which also involves the
Universities of Manchester, Newcastle and London South Bank. The post holder
will be developing and testing a security infrastructure that is aimed at
improving the usability of the security mechanisms in current grid
environments. In conjunction with the rest of the project team, the post
holder will be involved with:
- Investigating the user and security requirements for grid environments,
- Prototyping and testing the software design (both software and usability
- Implementing the final design, and
- Integrating it with the middleware currently used by the RealityGrid Project
(which is written in Perl and Java).

Applicants should have very good practical knowledge of software engineering
and of Perl (in a UNIX/Linux environment), as well as experience of at least
one of the following programming languages: C, Java or Python. They should
have a minimum of a good degree level qualification in a relevant
discipline. Experience with a formal software engineering methodology,
usability testing, or with any of the user-centred design methodologies is
also desirable. Applicants need to be able to develop and implement a
software specification with little supervision, and also to be able to
interact effectively with the software's intended users to elicit and address
usability issues. Candidates with experience of working in a research
environment are particularly welcomed.

The position is available to start on or after 1 October 2006, for a period of
up to two years. Salary will be on the UCL scale, between £22,774 and
£25,633, depending on qualifications and experience.

Applications, including a full C.V. and the names and addresses of two
academic referees, along with the following completed forms:
should be sent as soon as possible to Ms Nilufer Betik, Assistant Project
Manager, Centre for Computational Science, University College London, 20
Gordon Street London WC1H 0AJ U.K. (email:

Informal inquiries about this position may be made to Bruce Beckles (email: or Professor Peter Coveney, Director of the Centre for
Computational Science, University College London, 20 Gordon Street London WC1H
0AJ U.K. (email:

For further information see The following
documents may also provide useful background material:

- Removing digital certificates from the end-user's experience of grid
- Mechanisms for increasing the usability of grid security:
- Introducing WEDS: a WSRF-based Environment for Distributed Simulation:
- Development and deployment of an application hosting environment for grid
based computational science:

Closing date: 7 July 2006


From: Bjorn Stevens <>
Date: Tue, 6 Jun 2006 17:58:59 -0700
Subject: Postdoc/Researcher position in HP Computing for Atmos/Ocean Fluids

A post-doctoral fellow or research scientist with interests in
developing the capability for representing turbulent flows in
atmospheric and oceanic fluids across thousands to hundreds of
thousands of processors is being sought in support of UCLA's
contribution to the National Science Foundation Science and
Technology Center for Multiscale Modeling of Atmospheric Processes

The URL with the full position announcement is posted here:

Applications received prior to July 15th will receive full


From: "Bill Sloan" <>
Date: Wed, 7 Jun 2006 10:43:56 +0100
Subject: Research Fellow and 2 Postdocs, Univ Glasgow

Mathematical modelling of microbial communities in Biofilms, in Microbial
Fuel Cells and for Environmental Biotechnologies.

Lord Kelvin/Adam Smith Research Fellow and 2 Postdoctoral Research

University of Glasgow

The functioning of large multi-species communities of microbes has an enormous
impact on people's lives: they clean the environment, corrode materials, make
soil fertile and can cause disease. In the Civil Engineering department at the
University of Glasgow we are engaged in a concerted research effort to develop
mathematical models of microbial communities informed by the new molecular
methods and imaging tools for characterizing microbial communities. We require
3 numerate, highly motivated postdoctoral researchers with a background in
mathematical biology, theoretical ecology or mathematical modelling. The
candidates will be expected to conduct independent research within a
multidisciplinary team.

1. Lord Kelvin/Adam Smith postdoctoral research fellowship.

This highly prestigious 3 year research fellowship will be awarded to an
exceptional candidate who can demonstrate their own research agenda in
modelling microbial communities. The modelling should be aimed at promoting a
fundamental understanding of microbial communities that will ultimately inform
design in environmental biotechnology. Application by 14th July 2006 details

2. Postdoctoral research associate in modelling biofilms.

This 3 year postdoctoral appointment is funded by a European Science
Foundation grant. The aim is to develop a new modelling framework where
biofilms are treated in an analogous manner to landscapes in main stream

3. Postdoctoral research associate in modelling bacterial population
dynamics in microbial fuel cells.

This appointment is for 39 months and is funded by the Engineering and
Physical Sciences Research council as part of the SUPERGEN consortium on
biological fuel cells. The successful candidate will develop a numerical model
of the biofilm on the anode of a microbial fuel cell.

Applications for 2 and 3. CV and covering letter by 21st July 2006 to Dr
Bill Sloan, Department of Civil Engineering, University of Glasgow Tel: 0141 330 4076.


Date: Fri, 9 Jun 2006 13:20:01 +0200 (CEST)
Subject: Research positions in Antwerp (Belgium)

The Scientific Computing Group of the University of Antwerp announces
two open positions starting in the fall of 2006. The research topics
are within the field of modelling and model validation, with a focus on
real-life applications.

For detailed information on these and related projects, please visit

Candidates with a strong background in numerical analysis (mathematics,
engineering or computer science degree) are encouraged to apply.
Appointments are for 4 years for Ph.D. students and for up to 4 years
at the post-doctoral level (yearly renewable).

Please send your application to Annie Cuyt ( or
Brigitte Verdonk (


From: Hans Schneider <>
Date: Sun, 4 Jun 2006 10:06:05 -0500 (CDT)
Subject: Contents, LAA

Linear Algebra and its Applications
Volume 416, Issues 2-3, Page 215-1104 (15 July 2006)


1) Lists of Editors
Pages ii-iii

2) Control solvability of interval systems of max-separable linear
Pages 215-223
Helena My˙˙ková

3) On multi-index assignment polytopes
Pages 224-241
G. Appa, D. Magos and I. Mourtos

4) Basic classes of matrices with respect to quaternionic indefinite inner
product spaces
Pages 242-269
D. Alpay, A.C.M. Ran and L. Rodman

5) Nonnegative matrix factorization and I-divergence alternating
Pages 270-287
Lorenzo Finesso and Peter Spreij

6) Minimal blocks of binary even-weight vectors
Pages 288-297
Joseph P.S. Kung

7) The integral 3-harmonic graphs
Pages 298-312
Miroslav Petrovi˙˙, Bojana Borovi˙˙anin and Zoran Radosavljevi˙˙

8) A dynamic thick restarted semi-refined ABLE algorithm for computing a
few selected eigentriplets of large nonsymmetric matrices
Pages 313-335
Gang Wu

9) Two inverse eigenvalue problems for a special kind of matrices
Pages 336-347
Juan Peng, Xi-Yan Hu and Lei Zhang

10) On the nullspace, the rangespace and the characteristic polynomial of
Euclidean distance matrices
Pages 348-354
A.Y. Alfakih

11) Some composition determinants
Pages 355-364
J.M. Brunat, C. Krattenthaler, A. Lascoux and A. Montes

12) A variance inequality ensuring that a pre-distance matrix is Euclidean
Pages 365-372
Jacques Bénasséni

13) L -functions for line graphs of semiregular bipartite graphs
Pages 373-388
Iwao Sato

14) Inexact inverse iteration for symmetric matrices
Pages 389-413
Jörg Berns-Müller, Ivan G. Graham and Alastair Spence

15) Structure of isometry group of bilinear spaces
Pages 414-436
Dragomir ˙˙. ˙˙okovi˙˙

16) The Q -property of composite transformations and the P -property of
Stein-type transformations on self-dual and symmetric cones
Pages 437-451
Roman Sznajder and M. Seetharama Gowda

17) Weyl˙˙Titchmarsh theory for a class of discrete linear Hamiltonian
Pages 452-519
Yuming Shi

18) Ill-posedness with respect to the solvability in linear optimization
Pages 520-540
M.J. Cánovas, M.A. López, J. Parra and F.J. Toledo

19) Ando˙˙Hiai inequality and Furuta inequality
Pages 541-545
Masatoshi Fujii and Eizaburo Kamei

20) A note on the boundary of the set where the decreasingly ordered
spectra of symmetric doubly stochastic matrices lie
Pages 546-558
Bassam Mourad

21) Lie triple derivations of nest algebras
Pages 559-567
Jian-Hua Zhang, Bao-Wei Wu and Huai-Xin Cao

22) Rank one preserving R -linear maps on spaces of self-adjoint operators
on complex Hilbert spaces
Pages 568-579
Hong You, Shaowu Liu and Guodong Zhang

23) OnEuclideanalgebraofhermitianoperators on a quaternionic Hilbert space
Pages 580-587
Rok Stra˙˙ek

24) Additive rank-one preservers on block triangular matrix spaces
Pages 588-607
W.L. Chooi and M.H. Lim

25) Some results on structured M -matrices with an application to wireless
Pages 608-614
Jiu Ding, Wallace Pye and Lian Zhao

26) Iterated linear maps on a cone and Denjoy˙˙Wolff theorems
Pages 615-626
Brian Lins and Roger Nussbaum

27) On least squares g-inverses and minimum norm g-inverses of a bordered
Pages 627-642
Wenbin Guo, Musheng Wei and Mingjie Wang

28) Geometry of block triangular matrices over a division ring
Pages 643-676
Li-Ping Huang and Yong-Yu Cai

29) Approximate singular values of the fractional difference and summation
Pages 677-687
Prabir Burman

30) An extension of Kantorovich inequality to n -operators via the
geometric mean by Ando˙˙Li˙˙Mathias
Pages 688-695
Takeaki Yamazaki

31) Asymptotic spectral properties of totally symmetric multilevel
Toeplitz matrices
Pages 696-709
William F. Trench

32) Generalized Riccati equations arising in stochastic games
Pages 710-723
Michael McAsey and Libin Mou

33) More results on singular value inequalities of matrices
Pages 724-729
Yunxing Tao

34) On the ergodic principle for Markov and quadratic stochastic processes
and its relations
Pages 730-741
Nasir Ganikhodjaev, Hasan Akin and Farrukh Mukhamedov

35) A perturbation bound for the eigenvalues of a singular diagonalizable
Pages 742-744
Stanley C. Eisenstat

36) Greedy pathlengths and small world graphs
Pages 745-758
Desmond J. Higham

37) Bounds for Levinger˙˙s function of nonnegative almost skew-symmetric
Pages 759-772
Panayiotis J. Psarrakos and Michael J. Tsatsomeros

38) A note on definition of matrix convex functions
Pages 773-775
Oleg E. Tikhonov

39) Eigenvalues of graphs and a simple proof of a theorem of Greenberg
Pages 776-782
Sebastian M. Cioab˙˙

40) Realizability criterion for the symmetric nonnegative inverse
eigenvalue problem
Pages 783-794
Ricardo L. Soto

41) A procedure of Chvátal for testing feasibility in linear programming
and matrix scaling
Pages 795-798
Yi Jin and Bahman Kalantari

42) A q -analogue of the distance matrix of a tree
Pages 799-814
R.B. Bapat, A.K. Lal and Sukanta Pati

43) Optimization of generalized mean square error in signal processing and
Pages 815-834
William W. Hager, Yong Liu and Tan F. Wong

44) The inverse problems of the determinantal regions of ray pattern and
complex sign pattern matrices
Pages 835-843
Jia-Yu Shao, Yue Liu and Ling-Zhi Ren

45) Applications of a Brauer theorem in the nonnegative inverse eigenvalue
Pages 844-856
Ricardo L. Soto and Oscar Rojo

46) Three coefficients of a polynomial can determine its ˙˙ -instability
Pages 857-867
Alberto Borobia and Sebastián Dormido

47) On the range of a Hadamard power of a positive semidefinite matrix
Pages 868-871
Xiaosong Sun, Xiankun Du and Dayan Liu

48) On a unification result by A.R. Sourour concerning commutators and
products of involutions
Pages 872-879
J.D. Botha

49) The determinant of AA ˙˙ A A for a Leonard pair A , A
Pages 880-889
Kazumasa Nomura and Paul Terwilliger

50) Matrix versions of some classical inequalities
Pages 890-907
Jean-Christophe Bourin

51) Local 2-cocycles of nest subalgebras of factor von Neumann algebras
Pages 908-916
Jian-Hua Zhang, Shan Feng and Rui-Hua Wu

52) Bijective matrix algebra
Pages 917-944
Nicholas A. Loehr and Anthony Mendes

53) Similarity vs unitary similarity and perturbation analysis of sign
characteristics: Complex and real indefinite inner products
Pages 945-1009
Leiba Rodman

54) Canonical forms for complex matrix congruence and congruence
Pages 1010-1032
Roger A. Horn and Vladimir V. Sergeichuk

55) Regularity and the generalized adjacency spectra of graphs
Pages 1033-1037
Andrey A. Chesnokov and Willem H. Haemers

56) Commuting graphs of some subsets in simple rings
Pages 1038-1047
S. Akbari and P. Raja

57) Some results on the index of unicyclic graphs
Pages 1048-1059
Francesco Belardo, Enzo Maria Li Marzi and Slobodan K. Simi˙˙

58) A characterization of solutions of the discrete-time algebraic Riccati
equation based on quadratic difference forms
Pages 1060-1082
Chiaki Kojima, Kiyotsugu Takaba, Osamu Kaneko and Paolo Rapisarda

59) On sufficient conditions for the total positivity and for the multiple
positivity of matrices
Pages 1083-1097
Olga M. Katkova and Anna M. Vishnyakova

60) Spectra and Pseudospectra: The Behavior of Nonnormal Matrices and
Operators by Lloyd N. Trefethen and
Mark Embree, Princeton University Press, Princeton and Oxford, 2005, xvii
+ 606 pages, ISBN
Pages 1098-1101
Albrecht Böttcher

61) Author index
Pages 1102-1104

End of NA Digest