From surfer.EPM.ORNL.GOV!nacomb Sun Nov 29 12:56:33 0500 1992 Received: by research.att.com; Sun Nov 29 12:56 EST 1992 Received: by inet.att.com; Sun Nov 29 12:56 EST 1992 Received: by surfer.EPM.ORNL.GOV (5.61/1.34) id AA17858; Sun, 29 Nov 92 12:56:33 -0500 Date: Sun, 29 Nov 92 12:56:33 -0500 From: nacomb@surfer.EPM.ORNL.GOV (NA-NET) Message-Id: <9211291756.AA17858@surfer.EPM.ORNL.GOV> To: ehg@research.att.com Subject: NA Digest, V. 92, # 45 NA Digest Sunday, November 29, 1992 Volume 92 : Issue 45 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: LAPACK's Second Update Lanczos International Centenary Conference PASE 92 Workshop Submissions for NA Digest: Mail to na.digest@na-net.ornl.gov. Information about NA-NET: Mail to na.help@na-net.ornl.gov. ------------------------------------------------------- From: LAPACK Date: Wed, 25 Nov 92 09:51:47 -0500 Subject: LAPACK's Second Update SUBJECT: SECOND LAPACK UPDATE -- October 31, 1992 Our second "minor" update occurred on October 31, 1992. The version number of this update is 1.0b. Instead of our previous policy of only having the affected routines reflect the new version number, we have decided that it is better to have all LAPACK routines reflect the current version number with the date on the routine indicating when it was last modified. In this way, the user can be assured that he has the most recent version of a specific routine. For example, after this update if a routine does not say version 1.0b then it could possibly be an outdated version. You must refer to the date stamped on the routine in order to determine when it was last modified. As in our previous update, this update encompassed many minor corrections to documentation, argument checking and so on. In addition, a few significant errors have been corrected. Namely, a serious bug was introduced in the 1.0a revision of SSPEVX/DSPEVX which has now been fixed. Also, a special version of ilaenv.f needed in the TESTING and TIMING directories was inadvertently left out. This special version of ILAENV.f allows XLAENV.f to work correctly by influencing the performance when input parameters (such as blocksize NB) are changed in the input file. It has now been included. We have also noticed that a number of the driver routines (specifically all of the -EVX drivers and xGESVX) have incorrect workspace requirements specified (WORK for the real routines, and RWORK in the complex routines) in the Argument sections of those routines. One of the -CON routines, xGTCON, also had WORK requirements specified incorrectly. Please note these changes. Due to a user's suggestion, added functionality has been incorporated into the expert driver routines that involve equilibration (xGESVX, xGBSVX, xPOSVX, xPPSVX, xPBSVX). Namely, the option FACT='F' now permits the user to input a prefactored, pre-equilibrated matrix. The testing routines in TESTING/LIN/ that involve these routines have also been modified. Several routines involving symmetric pivoting (SSYTRF,CSYTRF,CHETRF) have also been improved. For consistency the packed routine equivalents have also been changed. The swapping in these routines now avoids overlapping array references in the same loop. The interchange blocks in the inverse routines have also been combined as had already been done in the factorization routines. Check the errata lists in the release_notes for more information. Via xnetlib, there is a tar file of changes that you can obtain and simply untar on top of your existing LAPACK directory. The file is called revisions1.0b.tar.z. The release_notes file contains details of the changes made to specific routines. The entire package available in lapack.tar.z includes all revisions made in release 1.0a and release 1.0b. Additional features included with version 1.0b of LAPACK: -- improved on-line manpages for LAPACK driver and computational routines -- on-line manpages for the Level 1, 2, and 3 BLAS -- improved functionality for the equivalence utility which aids in the conversion of LINPACK and EISPACK to LAPACK The manpages are available as a compressed/tar file of troff files and an equivalence program and may be obtained via xnetlib. A README file of instructions is included with the files. If you have any questions/comments please contact us at lapack@cs.utk.edu. Regards, THE LAPACKERS ------------------------------ From: Moody Chu Date: Tue, 24 Nov 92 16:20:26 -0500 Subject: Lanczos International Centenary Conference CORNELIUS LANCZOS INTERNATIONAL CENTENARY CONFERENCE December 12-17,1993 North Carolina State University Raleigh, NC, USA To celebrate the birth of Cornelius Lanczos in 1893, North Carolina State University together with other sponsors will hold an international conference from Sunday 12 December through Friday 17 December 1993. The conference will reflect the wide interests of Cornelius Lanczos in computational mathematics, theoretical physics, and astrophysics. PROGRAM The program of the conference includes approximately twenty-one invited plenary speakers and twenty-five minisymposia which will deal with the research topics listed below. The invited plenary papers and the minisymposium papers will be published in the proceedings of the conference. Also, the conference will include sessions of contributed papers in the form of twelve minute talks and poster sessions. The contributed talks and posters can be on any topic in the areas of computational mathematics, theoretical physics, and astrophysics. CALL FOR PAPERS The closing date for receiving abstracts for the contributed papers is 1 April 1993. Please see FURTHER INFORMATION for how to submit an abstract. PLENARY SPEAKERS Computational Mathematics: James W. Cooley Lanczos and the FFT: A discovery before its time Jane K. Cullum Lanczos algorithms for large scale nonsymmetric and symmetric matrix eigenvalue computations Roland W. Freund The Look-Ahead Lanczos Process for Nonsymmetric Matrices and Its Applications Gene H. Golub Extended Applications of the Lanczos Algorithm in Matrix Computations Anne Greenbaum The Lanczos and Conjugate Gradient Algorithms in Finite Precision Arithmetic Martin H. Gutknecht The Lanczos Process and Pade Approximation Beresford N. Parlett Do we fully understand the symmetric Lanczos algorithm yet? Pal Rozsa On Generalized Band Matrices and Their Inverses Youcef Saad Convergence Analysis of the Lanczos Algorithms for Eigenvalue Problems: An Overview G. W. Stewart Lanczos and Linear Systems John Todd Reminiscences of Cornelius Lanczos Theoretical Physics & Astrophysics: James B. Hartle* Christopher J. Isham Quantum Gravity Roger Penrose* Tsvi Piran Gamma Ray Bursts John J. Stachel Lanczos' Contributions to General Relativity Yasushi Takahashi Ignorable Coordinates and Collective Modes Claudio Teitelboim Kip S. Thorne Michael S. Turner The Remarkable Success Story of the Big Bang Cosmology John A. Wheeler *To be confirmed. MINISYMPOSIA# Computational Mathematics: M. Berry Software for Lanczos-based Algorithms A. Bjorck Least Squares Dan Boley Control Applications D. Calvetti Moments in Numerical Analysis M.T. Chu & John Lewis Eigenvalue Computations J. Cooley Development of the FFT T. Rivlin Chebyshev Polynomials R.J. Plemmons The FFT in Signal Processing H. Van der Vorst Iterative Methods for Linear Systems E. Ortiz Tau Method Theoretical Physics & Astrophysics: J. Blondin Computational Magnetohydrodynamics in Astrophysics A. Kashlinsky Galaxy Formation and Large-Scale Structure of the Universe M. Scholer & D. Winske Numerical Simulations of Collisionless Space Plasmas C.M. Will Detection of Gravitational Radiation from Astrophysical Sources J. Isenberg & V. Moncrief Cauchy Problem of General Relativity D. Garfinkle Cosmic Censorship P. Dolan & A.H. Taub Lanczos H-tensor M. J. Gotay Symplectic Techniques in Physics K.V. Kuchar Canonical Quantum Gravity and the Problem of Time J.J. Halliwell Decoherence and the Foundations of Quantum Mechanics L. Smolin New Variables and Loop Quantization P.H. Frampton, T.W. Kephart & M. Sher Black Hole Evaporation and Thermodynamics SSC Physics C. Carlson & A. Szczepaniak Open Questions in Particle Theory # The advisory and organizing committees will be open to the consideration of a few additional minisymposia until 15 January 1993. FINANCIAL SUPPORT We have applied to the NSF for support of 50 to 100 advanced Ph.D. students or junior researchers to attend this conference. Please see FURTHER INFORMATION on how to apply for support. FURTHER INFORMATION A first circular has been sent out through the SIAM, APS and GRG mailing list. A second circular giving details about the program and related information will be distributed in the Summer of 1993. If you wish to receive the second circular, please complete and return the reply form attached in the first circular, or write to: Cornelius Lanczos International Centenary Conference, Attn: Sheehan/Heggie, NCSU, Box 7401, Raleigh, NC, 27695-7401, USA or contact through e-mail: lanczos@math.ncsu.edu. A mail server has been set up to answer most your questions. Simply include the text "send information" in the subject line of your e-mail message. More information with instructions on how to submit an abstract, how to apply for financial support and etc. will automatically be forwarded to you. CONFERENCE ADMINISTRATORS Computational Mathematics: Robert J. Plemmons (WFU) Honorary Chairperson Moody T. Chu (NCSU) Co-Director Theoretical Physics & Astrophysics: James W. York, Jr. (UNC) Honorary Chairperson J. David Brown (NCSU) Co-Director Donald C. Ellison (NCSU) Co-Director ORGANIZING AND ADVISORY COMMITTEES Computational Mathematics: Moody T. Chu (NCSU) Jane K. Cullum (IBM, NY) Gene H. Golub (Stanford Univ.) Martin H. Gutknecht (ETH-Zentrum) Beresford N. Parlett (UC, Berkeley) Robert J. Plemmons (WFU) Theoretical Physics and Astrophysics: Jacob D. Bekenstein (Hebrew Univ. of Jerusalem) Charles R. Evans (UNC, Chapel Hill) Werner Israel (Univ. of Alberta) Tsvi Piran (Harvard-Smithsonian Ctr. for Astrophysics) John Stachel (Boston Univ.) Yasushi Takahashi (Univ. of Alberta) James W. York, Jr. (UNC, Chapel Hill) ------------------------------ From: Diethelm Wuertz Date: Fri, 27 Nov 92 17:15:48 +0100 Subject: PASE 92 Workshop Third announcement and information for participants For late registration please contact: wuertz@ips.id.ethz.ch ***** CVS30@CSPGCS11.BITNET PASE'92 3'RD INTERNATIONAL WORKSHOP ON PARALLEL APPLICATIONS IN STATISTICS AND ECONOMICS Prague, Czechoslovakia, December 7.-8. 1992 OBJECTIVE OF THE WORKSHOP: The PASE'92 Workshop follows previous successful workshops, held around the same time last year in Zurich and two years ago in Dublin. The purpose of the Workshop is to bring together researchers working towards applications of new information processing systems in statistics and economics. The Workshop should help to identify the theoretical and application areas in statistics and economics, where important progress can be expected in the years to come. The scope of the Workshop is mainly oriented towards artificial neural networks and related topics. Two main blocks appear in the program: a) neural networks theory and applications in general, b) neural network applications in banking and economics. The Workshop includes invited survey lectures and contributed research presentations. There will be also a possibility for poster presentation. A post-Workshop meeting on December 9 aims to continue existing joint projects, to find promising fields for future work and to develop collaborative projects. On the first day of the Workshop a panel discussion will be organized on the topic of philosophical aspects of connectionism and modern mathematical methods. A panel discussion will also be organized on the role of neural networks in the treatment of large data collections, and what our priorities can or should be in the coming year. A post- Workshop tutorial of Professor Madan M. Gupta on fuzzy neural networks will be held on December 9 in the afternoon. The Workshop proceedings will be published in the special issue of the International Journal on Neural and Mass- Parallel Computing and Information Systems Neural Network World in No. 6, Vol. 2 , which will be available during the Workshop. ORGANIZATION: The Workshop will be organized by the Institute of Computer and Information Science (ICIS, Prague), Interdisciplinary Project Center for Supercomputing (ETH, Zurich) and the Statistical Office of the European Communities (EUROSTAT, Luxembourg), with the help of Friedrich Naumann Stiftung, Czechoslovakia. Special thanks are due to Petr Hajek, director of the Institute of Computer and Information Science, and Mirko Novak, editor-in-chief of the Interna- tional Journal Neural Network World . SPONSORS: o Friedrich Naumann Stiftung, Czechoslovakia o MasPar Distributor AG, Zurich o Parsytec Gmbh, Aachen o SINCO Ltd., Prague o Siemens-Albis AG, Zurich o Swiss Bank Corporation, Basel INTERNATIONAL PROGRAM COMMITTEE: Witeli Dunin-Barkowski Russia John Frain Ireland Igor Grabec Slovenija Madan M. Gupta Canada Robert Hecht-Nielsen USA Leonidas Kioussis Luxembourg Rudolf Kober Germany Olga Kufudaki Czechoslovakia George M. Papadourakis Greece Goffredo G. Pieroni Italy Michael M. Richter Germany Tamas Roska Hungary Alfred Scheidegger Switzerland Michael G. Strintzis Greece Ivan Sujan Czechoslovakia Dieter Wenger Switzerland Hans Georg Zimmermann Germany ORGANIZING COMMITTEE: Hynek Beran (chairman) ICIS Prague Martin Holena ICIS Prague Fionn Murtagh Munotec Systems Dublin and Munich Emil Pelikan ICIS Prague Vaclav Sebesta ICIS Prague Diethelm Wurtz IPS ETH Zurich CONTACT ADDRESS: Hynek Beran Institute of Computer and Information Science Pod vodarenskou vezi 2 182 07 Prague 8, Czechoslovakia Phone: 00 42 2 815 3241, 00 42 2 815 3220 Fax: 00 42 2 858 57 89 E-mail: CVS30@CSPGCS11.BITNET Further information will be available from anonymous ftp: ftp maggia.ethz.ch. (129.132.17.1) ------------------------------ End of NA Digest ************************** -------