Send mail to: mgnet@cs.yale.edu for the digests or bakeoff mgnet-requests@cs.yale.edu for comments or help Anonymous ftp repository: www.mgnet.org (128.163.209.19) Current editor: Craig Douglas douglas-craig@cs.yale.edu address is in the From field. Anonymous ftp repository: www.mgnet.org (128.163.209.19) WWW Sites: http://www.mgnet.org or http://casper.cs.yale.edu/mgnet/www/mgnet.html or http://www.cerfacs.fr/~douglas/mgnet.html or http://phase.hpcc.jp/mirrors/mgnet or http://www.tat.physik.uni-tuebingen.de/~mgnet Today's editor: Craig Douglas (douglas-craig@cs.yale.edu) Volume 14, Number 11 (approximately November 30, 2004) Volume 14, Number 12 (approximately December 31, 2004) Today's topics: Important Dates Special Issue of Journal of Numerical Mathematics Winter School in Leipzig on Hierarchical Matrices Program for 21st GAMM-Seminar Leipzig - Robust Fast Solvers Copper Mountain Multigrid Conference IMACS conference on iterative methods, Toronto, May 5-8, 2005 ------------------------------------------------------- Date: Fri, 31 Dec 2004 10:22:21 -0400 From: Craig DouglasSubject: Important Dates Jan. 13 Copper Mountain student papers Feb. 3 Copper Mountain author abstracts See http://amath.colorado.edu/faculty/copper Jan. 15 IMACS minisymposia, student paper competition and financial support Feb. 1 IMACS contributed talks See http://www.fields.utoronto.ca/programs/scientific/04-05/IMACS/ ------------------------------------------------------- Date: Thu, 25 Nov 2004 16:21:53 +0100 From: Angela Kunoth Subject: Special Issue of Journal of Numerical Mathematics Journal of Numerical Mathematics: Special Issue on `Breaking Complexity: Multiscale Methods for Efficient PDE Solvers' Guest Editors: Angela Kunoth (Universitaet Bonn, Germany) and Siegfried Mueller (RWTH Aachen, Germany) Multiscale methods are widely known to help breaking complexity for many large scale scientific computing problems. For this Special Issue, we are soliciting original manuscripts aimed at the systematic development of mathematical concepts that provide the foundation for the design of efficient PDE solvers. Papers intended for this Special Issue should be submitted no later than June 30, 2005. Manuscripts should be sent as ps-files or pdf-files to either of the Special Issue Editors Angela Kunoth (e-mail: kunoth@iam.uni-bonn.de) or Siegfried Mueller (e-mail: mueller@igpm.rwth-aachen.de) Submitted manuscripts should be prepared using the JNM-style files provided at http://www.vsppub.com/journals/jn-ia-JNM.html All papers will be evaluated by the standard refereeing process employed by JNM. ------------------------------------------------------- Date: Fri, 3 Dec 2004 14:00:38 +0100 From: Steffen Boerm Subject: Winter School in Leipzig on Hierarchical Matrices Second Announcement Winter School "Hierarchical Matrices" Organizers: Wolfgang Hackbusch, Lars Grasedyck, Steffen Boerm (Max Planck Institute for Mathematics in the Sciences, Leipzig) Time: February 7th to February 11th, 2005 Registration Deadline: December 6th, 2004 Topic: Hierarchical Matrices can be a useful tool for the treatment of integral operators as well as the solution of linear systems arising in the discretisation of elliptic partial differential equations. Moreover, the representation of matrices in the hierarchical matrix format is suitable for the efficient solution of matrix equations. The aim of this winterschool is to teach the necessary theoretical foundations for hierarchical matrices, but most of all the efficient implementation of the algorithms. The practical realisation on the computer will be done during the exercise courses in the afternoons. The participants will use the HLib library in order to assemble and solve BEM and FEM systems. Lecture notes are available in electronic form. Website: http://www.mis.mpg.de/scicomp/winterschool/ HLib: http://www.hlib.org/ Lecture Notes: http://www.mis.mpg.de/preprints/ln/lecturenote-2103-abstr.html ------------------------------------------------------- Subject: Program for 21st GAMM-Seminar Leipzig - Robust Fast Solvers 21st GAMM-Seminar Leipzig on Robust Fast Solvers Max-Planck-Institute for Mathematics in the Sciences Inselstr. 22-26, D-04103 Leipzig Phone: +49.341.9959.752, Fax: +49.341.9959.999 http://www.mis.mpg.de/conferences/gamm/2005/index.html Wednesday, January 26 12.50 Opening G. Haase (Univ. Linz): to be announced S. Kunis (Univ. Luebeck): Iterative Fourier Reconstruction 14.30-15.00 Coffee break C. Douglas (Univ. of Kentucky): A Robust Abstract Multigrid Solver Goes Algebraic L. Grasedyck (MPI Leipzig): A multigrid method to solve large scale Sylvester equations N. Stahn (Univ. Zuerich): Robust Multigrid Method for the efficient solution of PDEs on complicated domains 16.30-17.00 Coffee break K. Johannsen (Univ. Heidelberg): A New ILU-type Smoother for Anisotropic Problems O. Brueker (ETH Zuerich): Multigrid smoothing with explicit approximate inverse stencils 18.00 End Thursday, January 27 09.00 Start P. Bastian (Univ. Heidelberg): Design and Implementation of Generic Solver Components J. Kraus (RICAM Linz): Algebraic MultiGrid based on computational molecules (AMGm): 1. scalar elliptic PDEs 10.30-11.00 Coffee break V. Heuveline (Univ. Karlsruhe): A multigrid solver for the Navier-Stokes equations using divergence free block-iteration F. Schieweck (Univ. Magdeburg): A Multigrid Method for Incompressible Flow Problems Using Quasi Divergence Free Functions N. Neuss (Univ. Heidelberg): Discrete periodic homogenization for linear elasticity and Stokes flow 12.30-14.00 Lunch O. Widlund (Courant Institute New York): Domain Decomposition Methods Based on Cholesky's Algorithm G. Of (Univ. Stuttgart): Efficient Iterative Solvers for Boundary Element Tearing and Interconnecting Method B. Khoromskij (MPI Leipzig): H-Matrix Preconditioning for Domain Decomposition with Brick-and-Mortar Coefficients 15.30-16.00 Coffee break R. Nabben (Univ. Bielefeld): Domain decomposition methods and deflated Krylov subspace iterations J. Ovall (MPI Leipzig): Dual Functions for Parallel Adaptive Methods F. Groh (ISG Stuttgart): A Convex Energy-Function and partial BEM-FEM decoupling in Nonlinear Magnetostatics 19.30 Conference dinner Friday, January 28 09.00 Start A. Kunoth (Univ. Bonn): A Monotone Multigrid Method Based on Higher Order B-Splines J. Tausch (Southern Methodist University): A spectral method for integral formulations of potential and high-frequency scattering problems 10.30-11.00 Coffee break M. Bollhue¶fer (TU Berlin): Inverse-Based Algebraic Multilevel Factorizations Methods M. Bebendorf (Univ. Leipzig): Why the LU decomposition of discretizations of second order elliptic operators can be computed with almost linear complexity M. Mohr (Univ. Erlangen-Nuernberg): Iterative Solution of the Piezoelectric Forward Problem 12.30-13.00 Coffee break J. Liesen (TU Berlin): Convergence analysis of GMRES for a convection-diffusion model problem C. Kelley (North Carolina State University): A Fast Continuation Method for the Ornstein-Zernike Equations I. Gavriljuk (Berufsakademie Thueringen): Duhamel's like algorithms for first order differential equations with operator coefficient having an evolution domain 14.10 End of the workshop ------------------------------------------------------- Date: Tue, 04 Jan 2005 14:56:58 -0800 From: Van Emden Henson Subject: 2nd announcement - Copper Mountain Multigrid Conference SECOND ANNOUNCEMENT (with corrected dates): Twelfth Copper Mountain Conference on Multigrid Methods April 3 - April 8, 2005 Copper Mountain, Colorado, USA ORGANIZED BY: The Center for Applied Scientific Computing at Lawrence Livermore National Laboratory Los Alamos National Laboratory Front Range Scientific Computations, Inc. The University of Colorado ORGANIZED IN COOPERATION WITH: Society for Industrial and Applied Mathematics TENATIVE SPONSORS: DOE, NSF, IBM, LANL, LLNL THEMES: General scalable multigrid and multilevel techniques: algebraic & structured. Parallel implementation of multigrid. Adaptive AMG. Adaptive Mesh Refinement. Applications of these methods. Every effort will be made to encourage contributions from anyone whose interest lies in these important and rapidly evolving fields. IMPORTANT FEATURES: STUDENT PAPER COMPETITION. Travel and lodging assistance will be awarded to students and new PhDs judged to have submitted the best research papers. MULTIGRID TUTORIALS. We will offer three tutorials: I. An updated tutorial on basic multigrid, including advanced multilevel techniques for nonlinear problems, variable mesh spacings, variable coefficient operators, and other common complicating situations; II. A tutorial introduction to multigrid for parallel computers; and III. An introduction to algebraic multigrid (AMG). CONFERENCE DEADLINES: Student Papers Jan. 13, 2005 Author Abstracts Feb.3, 2005 Early Registration March 3, 2005 Guaranteed Lodging March 3, 2005 FURTHER INFORMATION: Please access our web site at http://amath.colorado.edu/faculty/copper or contact Cathy Lee FRSC 1390 Claremont Drive Boulder, CO 80305 USA copper@Colorado.edu ------------------------------------------------------- Date: Sun, 12 Dec 2004 21:22:41 -0500 From: "Christina C. Christara" Subject: IMACS conference on iterative methods, Toronto, May 5-8, 2005 Seventh IMACS International Symposium on Iterative Methods in Scientific Computing May 5-8, 2005 The Fields Institute for the Mathematical Sciences and the University of Toronto Toronto, Ontario, Canada NOTE the first deadline *** January 15, 2005*** Sponsored by the Fields Institute for the Mathematical Sciences, MITACS (Mathematics of Information Technology and Complex systems), the Faculty of Mathematics at the University of Waterloo, the Centre for Computational Mathematics in Industry and Commerce (U. Waterloo), and IMACS. FORMAT AND THEME: The conference will feature invited lectures, minisymposia, selected contributed papers and a paper competition for students and new PhDs. Topics targeted include but are not limited to nonlinear systems, sparse linear systems, eigenproblem computations, preconditioning, multigrid, domain decomposition, Krylov subspace methods, linear and nonlinear optimization, interior point methods, complementarity and equilibrium problems, integer and combinatorial optimization, distributed computing, decomposition methods, high-performance and parallel computation, applications such as network flows, protein folding, blood flow, energy minimization, financial computation, computational fluid dynamics, image processing, internet search engines Of particular interest will be presentations on * interdisciplinary research and * open problems INVITED SPEAKERS Invited speakers include Tony Chan (UCLA), Tom Coleman (Cornell), Andy Conn (IBM), Paul Fischer (Argonne), Ilse Ipsen (NCSU), Van Henson (LLNL), Tim Kelley (North Carolina State), Kees Oosterlee (Delft), Andy Wathen (Oxford) PARTICIPATION AND DEADLINES * Minisymposia, student paper competition and financial support: January 15, 2005 * Contributed talks: February 1, 2005 For more information see: http://www.fields.utoronto.ca/programs/scientific/04-05/IMACS/ ------------------------------ End of MGNet Digest **************************