Homage to André Aisenstadt
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A Word from the Director................................................................................................................................ 2 Presenting the CRM.......................................................................................................................................... 4 Personnel 2001-2002.......................................................................................................................................... 5 Scientific Personnel........................................................................................................................................... 6 Members 6 Postdoctoral Fellows 8 Visitors 10 Management..................................................................................................................................................... 12 Bureau de direction 12 Advisory Committee 12 Computer Facilities 13 Homage to André Aisenstadt........................................................................................................................ 14 Scientific Activities......................................................................................................................................... 16 Theme Year 2001-2002: Groups and Geometry 16 Aisenstadt Chair 24 General Program 2001-2002 26 CRM Prizes 31 National Program Committee 34 Members’ Seminars and Special Events 38 CRM-ISM Colloquium 44 Coming Activities ........................................................................................................................................... 45 Theme Year 2002-2003: Math in Computer Science 45 Theme Year 2003-2004: Geometric and Spectral Analysis 49 Theme Year 2004-2005: Mathematics of Complex Multiple-Scale Systems 52 Interdisciplinary and Industrial Program 54 General Program 56 CRM Collaborative Network ....................................................................................................................... 58 AARMS/ACSMA.............................................................................................................................................. 60 Industrial Collaborations ............................................................................................................................. 61 Awards, Distinctions and Landmarks........................................................................................................ 64 Research Laboratories.................................................................................................................................... 65 CICMA 65 CIRGET 67 LACIM 69 Mathematical Analysis Laboratory 71 Applied Mathematics Laboratory 73 Mathematical Physics Laboratory 74 PhysNum 76 Statistics Laboratory 78 Publications ..................................................................................................................................................... 80 Recent Titles 80 Previous Titles 81 Research Reports 84 Financial Report at 31 May 2002 ................................................................................................................. 87 Financial Statement 2001-2002 89 CRM Annual Report 2001 - 2002 1 A Word from the Director Science first. It was an sur le Temps Extrême (LUTE). This laboratory, exceptionally rich year. with an important infusion in cash, personnel The thematic program in and computer time from Environment Canada, Groups and Geometry will work not only in the forecasting of extreme began with a remarkably weather, but also on modelling its impacts, in vigorous three-week collaboration with the various ncm2 partners. A session in group theory first workshop is taking place in the fall of 2002 and low dimensional on extreme values, and is co-organized with the topology, with over one finance group. The year also saw the creation of hundred participants for a second spin-off company, in data-mining each of the three weeks. applied to insurance. The first, in imaging, won The workshops that followed were all great the Entrepreneurship prize of the École des successes, and I hesitate to name just a few, for Hautes Études Commerciales de Montréal. The fear of offending those left out; I will however CRM research group in imaging has continued thank in passing our colleagues in Kingston, building up a research network in brain- Eddy Campbell and David Wehlau, who put imaging. One of the group’s researchers, Jean- together a remarkable two-week session, with a Marc Lina, is now sharing his time with the large number of students and visitors. The Institut Universitaire de Gériatrie de Montréal, holders of the Aisenstadt Chair this year were and is now an associate researcher at INSERM three absolutely exceptional mathematicians: (France). This Montréal-Paris collaboration has Edward Frenkel, Laurent Lafforgue and George just been awarded an important grant from the Lusztig. Lafforgue went on to receive a Fields Ministère de la Recherche, de la Science et de la medal later in the year. Lafforgue and Frenkel Technologie. gave their lectures in tandem, and were accompanied by Robert Langlands, who also The development of science does rely on gave a series of talks. The year in all saw twenty continuous funding. This is an arduous or so lecture series, which had a considerable constraint and the year from this point of view impact (thanks once again to those who gave was exceptionally full. The CRM submitted last them). If one adds to this the seminars of the January a request for renewal to NSERC, as part various groups and laboratories attached to the of a reallocations process that included four CRM, the CRM-ISM Colloquium (my thanks to institutes and twenty or so grant selection the organizers, Dana Schlomiuk and Tadashi committees. It was a heavy task: choosing Tokieda), it all adds up to a rich scientific priorities, choosing programs, writing the atmosphere, unthinkable even ten years ago. proposal, organizing a site visit with over a hundred people to coordinate. Many of the CRM The 2001-2002 program was not even over yet researchers took part in the proceedings, and I when we started on the 2002-2003 program on thank them. The whole process was a great the Mathematics of Computer Science. The CRM success, with the CRM obtaining an 11% increase played host in May to two of the big conferences in funding, which puts it third in the in theoretical computer science, STOC and CCC. reallocations exercise and gives it the same There were a number of small satellite activities funding as the Fields Institute and PIMS. The organized around this, and in June, a workshop additional resources obtained will be used on random number generators, organized in mostly to increase funding of long-term visitors style by Pierre L’Écuyer. The summer also saw a and of postdoctoral fellows. school in quantum computing, directed by Gilles Brassard, with over eighty participants. On the provincial front, as these words are being written, the CRM has just submitted its As ever, the two industrial networks, MITACS application to FQRNT, the provincial research and ncm 2, had their share of events and agency, for increased funding. The exercise, if it developments. The main one was doubtless the is crowned with success, will fund a certain official opening on December 6, 2001, of the new number of laboratories associated to the CRM; it ncm2 laboratory, the Laboratoire Universitaire has already allowed the CRM to obtain 2 Annual Report 2000 - 2001 CRM A Word from the Director significant financial support from all the major large number of talented mathematicians that Québec universities, and this for the first time. are now in our universities, a large segment of them having just arrived. They will, I hope, have An additional satisfaction occurred in the the resources that they deserve. writing of the application, as I was listing the Jacques Hurtubise CRM Annual Report 2001 - 2002 3 Presenting the CRM The Centre de recherches mathématiques (CRM) project (Mathematics of Information was created in 1969 by the Université de Technology and Complex Systems Another). Montréal through a special grant from the example is the National Program National Research Council of Canada. It became Committee, which provides funding for off- an NSERC national research centre in 1984. It is site research activities. currently funded by NSERC (Natural Sciences This national mandate is complemented by, and and Engineering Research Council), by the indeed supported by, a long-standing vocation Government of Québec through the FQRNT of promoting research in the Montréal area. For (Fonds québécois de la recherche sur la nature et instance, les technologies), by the Université de Montréal, • the CRM supports, through partnership and by private donations. The mission of the agreements, a group of local researchers CRM is to do research in mathematics and chosen mainly from departments of closely related disciplines and to provide mathematics and statistics, but also leadership in the development of the computer science, physics, economics, mathematical sciences in Canada. engineering, etc.; The CRM carries on its mission and national • it organizes series of regular seminars and mandate in several ways: lecture courses on different areas of • it organizes a series of scientific events each mathematical sciences; year, around a given theme (distinguished • it sponsors joint activities with the ISM lecture series, workshops, conferences, (Institut des sciences mathématiques) summer schools, visitor programs, etc.); including the weekly