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[2012. 2. 13] ILAS 1873 Send News for IMAGE Issue 48 

Deadline: April 2, 2012. 

IMAGE seeks to publish all news of interest to the linear 
algebra community. Photos are always welcome, as well as 
suggestions for improving the newsletter. 

Send your items directly to the appropriate person: 

Problems and Solutions to Bojan Kuzma (bojan.kuzma@upr.si) 
History of Linear Algebra to Peter Semrl (peter.semrl@fmf.uni-lj.si) 
Book Reviews to Oskar Baksalary (baxx@amu.edu.pl) 
Linear Algebra Education news to Steve Leon (sleon@umassd.edu) 
Announcements and Reports of Conferences, 
Workshops and Journals to Minerva Catral (catralm@xavier.edu) 
Interviews of Senior Linear Algebraists to Carlos Fonseca (cmf@mat.uc.pt) 
Advertisements to Amy Wehe (awehe@fitchburgstate.edu) 

All other news to Kevin N. Vander Meulen (kvanderm@redeemer.ca). 
This includes: 
Honors and awards, funding opportunities, job openings. 
Brief references to articles appearing elsewhere, 
of interest to the linear algebra community. 
Feature articles such as surveys , interesting applications, 
new developments. 
Announcements of new books, software, websites. 
Transitions (new positions, obituaries). 
Letters to the Editor. 
Small items like clever proofs, historical tidbits, cartoons, etc. 
Suggestions for IMAGE 

Deadline for submission is April 2, 2012 

Issue 48 will is scheduled to be published online June 1, 2012. 

A special thank you to Jane Day for her excellent work 
as Editor-in-Chief of IMAGE for the past 5 ½ years! 

 

[2012. 2. 6] ILAS 1872 Electronic Journal of Linear Algebra

Dear ILAS community, 

Below are is a list of titles for the January 2012 ELA papers. 
These appear in two volumes (Volume 23 a regular volume, and Volume 24 a special issue devoted to the 2011 Directions in Matrix Theory Conference). 

The papers are available at http://www.math.technion.ac.il/iic/ela. 

Enjoy reading these papers, 

Bryan Shader 
Editor-in-chief 
The Electronic Journal of Linear Algebra 

-------------------------- 

VOLUME 23 
1. M. Catral, C. Erickson, L. Hogben, D.D. Olesky and P. van den 
Driessche, Sign patterns that allow strong eventual nonnegativity, pp. 
1-10. 

2. Yonge Tian, On an equality and four inequalities for generalized 
inverses of Hermitian matrices, pp. 11-42. 

3. Yaokun Wu and Shizhen Zhao, Incidence matrix and cover matrix of 
nested interval orders, pp. 43-65. 

4. Shi-Cai Gong, The characteristic set with respect to the k-maximal 
vectors of a tree, pp. 66-78. 

5. J. Ekstrand, C. Erickson, D. Hay, L. Hogben and J. Roat, Note on 
positive semidefinite maximum nullity and positive semidefinite zero 
forcing number of partial 2-trees pp. 79-87. 

6. Le Cong Loi, On multipoint boundary value problems for linear 
singular difference equations pp. 88-114. 

7. Ali Armandnejad and Zahra Gashool, Strong linear preserverse of 
G-tridiagonal majorization on R^N* pp. 115-121. 

8. Lihua You and Shuyong Yi, The characterization of primitive symmetric 
loop-free signed digraphs with the maximum base, pp. 122-136. 

9. Hong-hai Li, Li Su and Hui-xian Sun, On bipartite graphs which attain 
minimum rank among bipartite graphs with given diameter pp. 137-150. 

10. Luz M. DeAlba, Jason Grout, In-Jae Kim, Steve Kirkland, Judith J. 
McDonald and Amy Yielding, Minimum rank of powers of trees pp. 151-163. 

VOLUME 24 
1. Carlos M. Fonseca, Shmuel Friedland, Oskar Maria Baksalary, 
Preface to Directions in Matrix Theory Conference pp. 1-2 

2. W. H. Haemers, M.J.P. Peeters, The maximum order of reduced square 
(0,1)-matrices with a given rank pp. 3-6. 

3. Irina Mazilu, Dan A. Mazilu and H. Thomas Williams, Applications of 
tridiagonal matrices in non-equilibrium statistical physics pp. 7-17. 

4. Shmuel Friedland, Results and open problems in matchings in regular 
graphs pp. 18-33. 

 

[2012. 2. 6] ILAS 1871  CRM Conference on Applications of Graph Spectra in Computer Science 

Second Announcement 
====================================================================== 
CRM CONFERENCE ON APPLICATIONS OF GRAPH SPECTRA IN COMPUTER SCIENCE 

July 16-20, 2012, Barcelona 

http://www.crm.es/Activitats/Activitats/2011-2012/GraphSpectra/web-graphspectra/ 
====================================================================== 

DESCRIPTION 

The spectra of matrices associated with a network are widely used to characterize its properties and to extract structural information. 
Applications of spectral graph theory may be easily found in
 combinatorial optimization (e.g., Goemans-Williamson MAXCUT algorithm), computer science (e.g., spectral clustering, expander graphs, pattern recognition) or complex networks (e.g., web page ranking, synchronization, epidemic thresholds). 

The aim of this conference is to bring together the diverse collection of researchers from graph theory, computer science and complex networks, who are interested in the theory and applications of graph spectra to discuss current trends and future directions in this area. The conference is expected to provide cross-fertilization of ideas, create more awareness among disparate groups of researchers and foster an increase in collaborations between theory- and application-oriented studies. For young researchers in particular, this will be an excellent opportunity to see the full scope of the subject and many interesting directions they can explore. 

ORGANIZATION 
The conference is organized and sponsored by 

Centre de Recerca Mathematica (CRM), Barcelona 
http://www.crm.es/ 

and co-sponsored by 

Ministry of Science and Innovation (MICINN), Spain. 

The conference will take place at CRM in Campus de Bellaterra, Edifici C, 08193 Bellaterra (Barcelona). 


KEYNOTE SPEAKERS 

Anirban Banerjee, Indian Institute of Science Education and Research, Kolkata 
Fan Chung, University of California at San Diego 
Dragos Cvetkovic, Serbian Academy of Sciences and Arts 
Ernesto Estrada, University of Strathclyde 
Miguel Angel Fiol, UPC BarcelonaTech 
Edwin Hancock, University of York 
Jurgen Jost, Max Planck Institute for Mathematics in Sciences, Leipzig 
Nathan Linial, Hebrew University of Jerusalem 
Ulrike von Luxburg, University of Hamburg 
Piet Van Mieghem, Delft University of Technology 
Daniel Spielman, Yale University 


SCIENTIFIC COMMITTEE 

Francesc Comellas, UPC BarcelonaTech 
Fan Chung, University of California at San Diego 
Dragos Cvetkovic, Serbian Academy of Sciences and Arts 
Robert Elsasser, University of Paderborn 
Miguel Angel Fiol, UPC BarcelonaTech 
Steve Kirkland, Hamilton Institute 
Nair Maria Maia de Abreu, Federal University of Rio de Janeiro 
Piet Van Mieghem, Delft University of Technology 
Dieter Mitsche, ETH Zurich 
Vladimir Nikiforov, University of Memphis 
Maria Jose Serna, UPC BarcelonaTech 
Dragan Stevanovic (chair), University of Primorska, Koper, Slovenia 
and University of Nis, Serbia 


ORGANIZING COMMITTEE 

Francesc Comellas (co-chair), UPC Barcelona 
Cristina Dalfo, UPC Barcelona 
Josep Fabrega, UPC Barcelona 
Alicia Miralles, UPC Barcelona 
Margarida Mitjana, UPC Barcelona 
Dragan Stevanovic (chair), University of Primorska, Koper, Slovenia 
and University of Nis, Serbia 


IMPORTANT DATES 

Abstracts may be submitted by first creating an EasyChair account at https://www.easychair.org/conferences/?conf=ags2012, 
and then by filling out "New submission" form after logging in to your account. 

Abstract submission deadline: May 15, 2012 
Abstract acceptance notification: June 15, 2012 


INSTEAD OF BOOK OF PROCEEDINGS 

There will be no standard book of proceedings for the conference. 
Instead, selected papers will be published in a special issue of Discrete Applied Mathematics devoted to the conference theme. The deadline for submission is November 15, 2012. Note that the special issue is open also for papers not presented at the conference. Papers will be subject to a strict review process managed by the Guest Editors: Francesc Comellas, Robert Elsasser and Dragan Stevanovic. 


CONTACT 

For more information, please contact secreteria@crm.cat or check the website 


http://www.crm.es/Activitats/Activitats/2011-2012/GraphSpectra/web-graphspectra/

 

[2012. 1. 31] ILAS 1870 ILAS Website Update 

This email is to clarify the status of the ILAS International Centre website. As of a year ago, the mirror websites in Israel, Germany, Portugal, and US stopped functioning. And we have not been able to coordinate the repair. 

The only up-to-date ILAS site is Regina, Canada at: 

http://www.ilasic.math.uregina.ca/iic/ 

Please update your bookmarks/favorites and only use the Regina site until further notice. 

Yours sincerely, 
Sarah Carnochan Naqvi 
ILAS-IC and ILAS-Net Manager 

 

[2012. 1. 31] ILAS 1IWASEP Napa Valley, June, 2012 

IWASEP - Accurate Solution of Eigenvalue Problems 
Napa Valley, June, 2012 -- First Announcement 



Intl. Workshop on Accurate Solution of Eigenvalue Problems IX (IWASEP IX) 
Napa Valley, California, June 4 - 7, 2012 

Abstract Deadline: April 1, 2012. 
Registration Deadline: April 1, 2012. 

Organizers 
Jesse Barlow (Chair), The Pennsylvania State University, SIAM representative 
Zlatko Drmac, University of Zagreb 
Volker Mehrmann, Technical University of Berlin 
Ivan Slapnicar, University of Split 
Kresimir Veselic, Fernuniversitaet Hagen 

Local Organizing Committee 
Jim Demmel, UC Berkeley 
Esmond G. NG, Lawrence Berkeley National Laboratory 
Oded Schwartz, UC Berkeley 

The purpose of this workshop is to bring together experts on accuracy issues in the numerical solution of eigenvalue problems for four days of research presentations and discussions. This is the ninth such workshop. 
The most recent was held in Berlin, Germany, June 28 - July 1, 2010. 
This conference will be held in the Embassy Suites in Napa Valley, CA. 

In addition, the organizers welcome submitted presentations and posters that are consistent with the theme of the meeting. A prize will be given for the best poster. 

For more information: www.eecs.berkeley.edu/~odedsc/IWASEP9
 

 

[2012. 1. 30] ILAS 1868  ILAS Election Results 

The ballots have now been counted for the recent ILAS elections. Here are the 
results. 

Leslie Hogben has been elected as ILAS Secretary-Treasurer for a three-year term 
beginning 1 March, 2012. Dale Olesky and Peter Semrl have been elected to the ILAS Board of Directors, each for a three-year term beginning 1 March, 2012. 

I look forward to working with Leslie, Dale and Peter, as well as the rest of the Board of Directors, in service to ILAS. I would like to thank Jeff Stuart (Nominating Committee Chair) for counting the ballots, and all of the candidates for agreeing to stand for election. 

 

[2012.1. 30] ILAS 1867  Hans Schneider Prize

 

The Hans Schneider Prize is for research, contributions, and achievements at the 
highest level of Linear Algebra. The ILAS Executive Board is pleased to announce
 
that the 2012 Hans Schneider Prize in Linear Algebra has been awarded to Thomas
 J. Laffey, of University College Dublin, Ireland. The award is made in recognition of Laffey's lifetime profound contributions to many areas of Linear Algebra, including integral matrices, simultaneous similarity, linear preservers, and, in particular, his breakthrough results on the inverse eigenvalue problem for nonnegative matrices. 

The following are just a couple of examples of Laffey's achievements. He proves (in a joint paper with Reams, 1994) that every square matrix over the integers with trace zero is a commutator of two integral matrices, thus providing an analogue to the classical result over fields. The nonnegative inverse eigenvalue problem (NIEP) asks for a characterisation of those lists of n complex numbers (possibly with repetitions) that comprise the spectra (with multiplicities) of n-by-n entrywise nonnegative matrices. Laffey (in a joint paper with Smigoc, 2006) completely solves the NIEP if the lists are selfconjugate and consist of one positive real number and and n-1 complex numbers with nonpositive real parts. 
Further, in a recent paper, Laffey brings new insight to the NIEP by giving an
ingenious, elementary and constructive proof of the Boyle - Handelman theorem in an important special case. 

Laffey is well known in the mathematical community outside of Linear Algebra. He is heavily involved with the Irish team for the International Mathematical Olympiad. Laffey has been a member of the National Committee for Mathematics and represented Ireland at the International Congress of Mathematicians. A member of the Royal Irish Academy since 1981, he served as its Vice President for the period 1990 - 1992. Laffey's encyclopedic knowledge and enthusiasm for mathematics of all kinds have made him an invaluable source of information and advice for his colleagues and students alike. 

The Hans Schneider Prize will be presented to Professor Laffey at the next ILAS 
meeting in Providence USA, 3-7 June, 2013, and Laffey will also be invited to
 give a lecture at that meeting. 
The ILAS Executive would like to express its sincere thanks to the members of the 
2012 Hans Schneider Prize Committee: Shmuel Friedland, Leiba Rodman (chair), Peter Semrl, Bryan Shader, and Valeria Simoncini. An outstanding group of people were nominated for the Prize, and the Prize Committee performed its duties with appropriate thoroughness and careful consideration. The Prize Committee's efforts are most appreciated.

 

[2012. 1. 11] ILAS 1866  2011 ILAS Election voting closes January 22, 2012 

Each member was e-mailed an individual username and password and instructions for electronic voting on November 18, and voting was opened. If you have not yet voted, you may vote any time until January 22, 2012. 

 

[2012.1. 10] ILAS 1864 2012 Shanghai Conference on Algebraic Combinatorics

The Shanghai Conference on Algebraic Combinatorics will take place during August 
17 -- 22, 2012 at Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 
200240, China. 

August 17 is the registration day and the scientific program begins from August 18. 

The topics of this conference are algebraic combinatorics in the widest sense and 
many related directions in pure and applied mathematics and sciences. 

The academic committee of the conference consists of the following: 

Richard Stanley (MIT) 
Zhe-Xian Wan (Chinese Acad. Sci.) 
Qing Xiang (U. Delaware) 


The organizing committee of the conference consists of the following: 

Eiichi Bannai - bannai@sjtu.edu.cn 
Hao Shen - haoshen@sjtu.edu.cn 
Yaokun Wu - ykwu@sjtu.edu.cn 
Xiao-Dong Zhang - xiaodong@sjtu.edu.cn 


All talks in this conference are by invitation and we plan to arrange the following three kinds of talks: (i) 50 minutes main talks. (ii) 30 minutes talks. 
(iii) 15 minutes short talks. 

The current confirmed 50 minutes main speakers are listed below: 

Anders Björner (Royal Institute of Technology) 
Aart Blokhuis (TU-Eindhoven) 
Peter J. Cameron (U. of London) 
Henry Cohn (Microsoft) 
Robert L. Griess, Jr. (U. of Michigan) 
Tatsuro Ito (Kanazawa) 
Alexander A. Ivanov (Imperial College) 
Gil Kalai (Hebrew Univ.) 
William M. Kantor (U. of Oregon) 
Jacobus Koolen (POSTECH) 
Abhinav Kumar (MIT) 
Richard Stanley (MIT) 
Paul Terwilliger (Wisconsin) 
Zhe-Xian Wan (Chinese Acad. Sci.) 
Jiping Zhang (Peking Univ.) 
Chuanming Zong (Peking Univ.) 


If we have many speakers, we may have to adjust some 30 minutes talks to be 25 
minutes long. We will try to avoid parallel sessions as much as possible. But it might be inevitable to arrange parallel talks for 15 minutes short talks and maybe, some 30 minutes (or 25 minutes) talks. 

Those who have interest to attend our conference are invited to drop a message to 
any member of the academic committee and/or organizing committee to register to 
the conference in which they should indicate whether or not they want to give a talk. The list of invited speakers will basically be fixed in June 2012. Early registration will be very much welcome. 

The registration fee for the conference is 1000 RMB for each participant. This will cover conference material, lunches, suppers, and coffees and teas during breaks. This fee will be collected when the participants come to the registration desk to get their conference name badges and other conference material. 

Important dates: 

April 30: registration closed. 
May 31: hotel reservation. 
June 30: Abstract submission. 


The address of the homepage of the conference is: 
http://math.sjtu.edu.cn/Conference/SCAC/ 

More information about the hotel, traffic and confirmed speakers will be available in our conference website gradually. Please also contact with our organizing committee if you have any concern on the conference organization. 

Journals

* IMAGE - ILAS' Bulletin
* Electronic Journal of Linear Algebra
* Elsevier

Last News

ILAS Educational
Commitee

Steve Leon (Chair)
Luz De Alba
Guershon Harel
David Lay
Sang-Gu Lee
 

ILAS Executive
Board

* President
Stephen Kirkland
* Vice-President
Chi-Kwong Li
* Secretary/Treasurer
Leslie Hogben

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