September 1997 - Categories - categories.org.au

Lambekfest
by Michael Barr 16 Sep '97

16 Sep '97

Jim Lambek's colleagues, former students, and friends will host a one day conference in his honour on the occasion of his 75th birthday. Date: Friday December 5, 1997. Place: Room B45, Burnside Hall, McGill University, Montreal. In recognition of Jim's substantial contributions to ring theory, category theory and mathematical linguistics, the tentative program is: Program. 10:00-10:30 Welcoming remarks and biographical sketch 10:30-11:00 Break 11:00-12:00 David Handelman, University of Ottawa. 12:00- 2:00 Lunch 2.00- 3:00 Robert Pare, Dalhousie University. 3:00- 3:30 Tea 3:30- 4:30 V. Michele Abrusci, Universita di Bari, Italy. 6:30- Banquet Registration: The entire mathematical community is welcome to attend, and Lambek's former colleagues and students are particularly encouraged to do so. Registration fees will cover the cost of the banquet and of a gift for Professor Lambek. Couples are encouraged to attend. The cost for one person is $60 and for two is $100. In order to be able to organize the banquet, please register by November 15. People who wish to contribute to the gift without coming to the banquet are invited to send $20. Cheques payable to McGill University should be mailed to Elaine Tremblay Dept. of Math. & Stats. McGill University 805 Sherbrooke St., West Montreal, QC H3A 2K6 Canada Please indicate if you prefer vegetarian food. Hotels: The hotels and motels listed at the end are located near McGill and offer lower academic rates. The organizing committee. Michael Barr, McGill University, Robert Raphael, Concordia University, Georg Schmidt, McGill University. J. Lambek fetera son 75'ieme anniversaire ce decembre prochain. A cette occasion ses collegues, ses anciens etudiants et ses amis vous proposent un colloque en son honneur. Date: vendredi le 5 decembre 1997. Lieu: Salle B45, Pavillon Burnside, Universite McGill, Montreal. Afin de refleter les contributions importantes de J. Lambek dans la theorie des anneaux, la theorie des categories, ainsi que dans la linguistique mathematique, nous suggerons le programme suivant: 10;00-10;30 Mots de bienvenue et esquisse biographique, 10;30-11;00 Pause, 11;00-12;00 David Handelman, Universite d"Ottawa 12;00-2;00 Lunch 14;00-15;00 Robert Pare, Universite Dalhousie, 15;00-15;30 the 15;30-16;30 V. Michele Abrusci, Universita de Bari, Italie, 18;30 Banquet Inscription: Toute la communaute mathematique est invitee:la presence des anciens collegues et etudiants de Lambek est particulierement sollicitee. Les frais d'inscription comprennent le banquet et un cadeau qui sera offert a M. Lambek. Les couples sont les bienvenus. Les frais sont de $60 pour une personne et de $100 pour un couple. Ceux qui desirent contribuer au cadeau sans toutefois assister au banquet peuvent faire parvenir un cheque au montant de $20. Pour faciliter l'organisation du banquet nous vous prions de vous inscrire avant le 15 novembre. Les cheques -a l'ordre de l'Universite McGill-doivent etre addresses a Mme. Elaine Tremblay, Department de Mathematiques et Statistiques, Universite McGill, 805 Sherbrooke ouest Montreal H3A 2K6. Priere d'indiquer votre preference pour un repas vegetarien. Accomodation: Les hotets et motels suivants se trouvent a proximite de l'Universite McGill et offrent des tarifs reduits aux universitaires. Le comite de planification Michael Barr, McGill University, Robert Raphael, Concordia University, Georg Schmidt, McGill University. Ritz-Carlton Kempinski Montreal The Ritz-Carlton Kempinski Montreal is a five-star deluxe property, minutes away from McGill University. The hotel features 230 tastefully decorated rooms including 45 suites, 24-hour room service, one dining room, an outside garden in the summer season, two bars and a newfully furnished exercise room. The Ritz has 12 meeting rooms with a capacity up to 550. McGill Rates: $129.00 (Cdn.) - SINGLE/DOUBLE (June 1, 1997 - May 31, 1998) Address: 1228 Sherbrooke West, Montreal, Quebec H3G 1H6 Tel: (514) 842-4212 Toll-free: 1-800-363-0366 (in Canada & U.S.) Internal: 398-8082 http://www.ritz-carlton-montreal.com/ ==================================================================== Delta Montreal Minutes away from the McGill Campus, in the hub of the business, entertainment, shopping, and dining district, the completely renovated Delta Montreal boasts 453 oversized rooms (most with a balcony), 13 meeting rooms, and a ballroom which seats 650 people. Special features: Complete spa and health club facilities, including indoor/outdoor pools, exercise room, two squash courts, and more. McGill Rates: $115.00 (Cdn.) - SINGLE/DOUBLE (June 1, 1997 - Oct. 31, 1997) $105.00 (Cdn.) - SINGLE/DOUBLE (Nov. 1, 1997 - May 31, 1998) Address: 450 Sherbrooke West, Montreal, Quebec H3A 2T4 Tel: (514) 286-1986 Toll-free: 1-800-268-1133 Internal: 398-8090 http://www.deltahotels.com ======================================================================= Chateau Versailles The Chateau Versailles is located downtown on fashionable Sherbrooke Street West (corner of St. Mathieu), 5 minutes walking distance to McGill University. Our 176 rooms are located in two separate buildings: the historic Chateau section built in 1912 or our new modern Tower section. For your meetings we have four conference rooms for groups up to 50 as well as our four diamond award winning Champs Elysees Restaurant. McGill Rates: $89.00 (Cdn.) -SINGLE/DOUBLE (June 1, 1997 - May 31, 1998) Address: 1659 Sherbrooke West, Montreal, Quebec H3H 1E3 Tel: (514) 933-3611 Toll-free: 1-800-361-7199 (in Canada & U.S.) Internal: 398-8091 http://www.montrealnet.ca/versailles to register on-line. In order to receive the McGill reduced rate be sure to request the McGill rate in the special requirements box. ============================================================================ Best Western Ville-Marie Totally renovated the Best Western Ville-Marie Hotel & Suites is located adjacent to McGill Campus, corner of Peel & Sherbrooke. Our new corporate suites are equiped with voice mail, fax modem, hook ups, coffee makers and full amenities. Our new Health Club features state of the art equipment. For meetings, conventions or any type of social events our 10 banquet halls can accommodate 5 to 400 people. McGill Rates: $75.00 (Cdn.) -SINGLE/DOUBLE (STANDARD) $99.00 (Cdn.) -SINGLE/DOUBLE (DELUXE) (01/11/97 - 31/05/98) $90.00 (Cdn.) -SINGLE/DOUBLE (STANDARD) $110.00 (Cdn.) -SINGLE/DOUBLE (DELUXE) (01/06/97 - 31/10/97) Address: 3407 Peel Street, Montreal, Quebec H3A 1W7 Tel: (514) 288-4141 Toll-free: 1-800-361-7791 Internal: 398-8081 http://www.bwvillemarie.com/67012 ==================================================================== Hotel-Plaza Howard Johnson The Hotel-Plaza Howard Johnson, located two blocks from McGill Campus, is within walking distance from the business district, Place des Arts, underground shopping centres and various museums. Our unique European style hotel can pamper you with our full service personnel, 194 guestrooms including 89 suites, 13 meeting/banquet rooms. Special features: in-room coffee machines, room service, dry cleaning service, fitness facilities, outdoor terrace and valet parking. McGill Rates: $89.00 (Cdn.) - SINGLE/DOUBLE (Superior) (June 1, 1997 - May 31, 1998) Address: 475 Sherbrooke West, Montreal, Quebec H3A 2L9 Tel: (514) 842-3961 Toll-free: 1-800-842-3961 Internal: 398-8177 (No web address)

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For Category Bulletin: New Preprint
by Ronnie Brown 09 Sep '97

09 Sep '97

Groupoids and Crossed Objects in Algebraic Topology Ronald Brown Notes for Lectures at the Summer School on the `Foundations of Algebraic Topology', Grenoble, June 14 -July 5, 1997 (71 pages). Abstract: The notes concentrate on the background, intuition, proof and applications of the 2-dimensional Van Kampen Theorem (for the fundamental crossed module of a pair), with sketches of extensions to higher dimensions. One of the points stressed is how the extension from groups to groupoids leads to an extension from the abelian homotopy groups to non abelian higher dimensional generalisations of the fundamental group, as was sought by the topologists of the early part of this century. This links with J.H.C. Whitehead's efforts to extend combinatorial group theory to higher dimensions in terms of combinatorial homotopy theory, and which analogously motivated his simple homotopy theory. Available from http://www.bangor.ac.uk/~mas010/brownpr.html (gzipped postscript). Ronnie Brown Prof R. Brown, School of Mathematics, University of Wales, Bangor Dean St., Bangor, Gwynedd LL57 1UT, United Kingdom Tel. direct:+44 1248 382474|office: 382475 fax: +44 1248 383663 World Wide Web: home page: http://www.bangor.ac.uk/~mas010/ New article: Higher dimensional group theory Symbolic Sculpture and Mathematics: http://www.bangor.ac.uk/SculMath/ Mathematics and Knots: http://www.bangor.ac.uk/ma/CPM/exhibit/welcome.htm

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new preprint archive on scholarly communications
by categories 05 Sep '97

05 Sep '97

[Note from moderator: Jim Stasheff suggested that this archive might be of interest to readers of categories. Though the archive is not relevant to the topic of the list, I am forwarding the information as a follow-up to the discussion of related issues in Vancouver, Regards to all, Bob Rosebrugh ] Date: Thu, 4 Sep 1997 09:08:20 -0400 (EDT) From: Mark Steinberger <mark(a)csc.albany.edu> Paul Ginsparg has set up an archive for discussion of scholarly communications. Please do contribute any papers you have on the subject. The archive is called sch-comm. You have to register as an author before it will process submissions. The interface for browsing papers is http://xxx.lanl.gov/archive/sch-comm . You can subscribe to receive abstracts of new postings by sending a message to sch-comm(a)xxx.lanl.gov with Subject: subscribe . Cheers, Mark -------------------------------------------------------------------------- Mark Steinberger | Dept. of Math. & Stat | Nonlinear similarity begins in dimension six. SUNY at Albany | Albany, NY 12222 | mark(a)csc.albany.edu | http://math.albany.edu:8800/~mark --------------------------------------------------------------------------

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Barrfest proceedings (reminder)
by Robert A. G. Seely 03 Sep '97

03 Sep '97

This is a reposting of the call-for-papers for the Barrfest. This notice may also be found on the CRTC/CTRC WWW home page: <ftp://triples.math.mcgill.ca/crtc.html> or <ftp://triples.math.mcgill.ca/ctrc.html> CENTRE de RECHERCHE en THEORIE des CATEGORIES CATEGORY THEORY RESEARCH CENTER C ---------> R | / | | / | | / | | / | v / v T ---------> C BARRFEST PROCEEDINGS - CALL FOR PAPERS There will be a special issue of the Journal of Pure and Applied Algebra dedicated to Michael Barr, in honour of his 60th birthday, and nominally the proceedings of the BarrFest, held in Montreal 29 - 31 May 1997. We invite submissions to these Proceedings from anyone interested; papers submitted will undergo the usual JPAA referee process, and we are hopeful that the final Proceedings will be ready before summer 1998. Topics suitable for the Proceedings include any of the subjects to which Michael Barr has contributed, such as homological algebra, triples, embeddings, exact catgeories, torsion theories, topos theory, topology, *-autonomous categories, universal algebra, logic, linear logic, computer science, or linguistics. The submission deadline for the BarrFest Proceedings is 15 September 1997. Please send five (5) (paper) copies before then to R.A.G. Seely Department of Mathematics McGill University 805 Sherbrooke St W Montreal H3A 2K6 Quebec, Canada (If possible) please send an email message to rags(a)math.mcgill.ca indicating the title (and authors, if other than the sender of the email) of the paper, as well as an abstract (in standard ascii format, maximum 1 page) of the paper. If you are able to provide a uuencoded, compressed PostScript file (300 dpi), please mention this in your email as well. If having the electronic file will speed up the refereeing process, we will get in touch with you to request such files. For further information, please contact Robert Seely <rags(a)math.mcgill.ca>. F.W. Lawvere (guest editor) T. Fox, R.A.G. Seely (co-editors)

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preprint available: not yet :-(
by koslowj＠iti.cs.tu-bs.de 02 Sep '97

02 Sep '97

Dear Colleagues, A technical glitch prevents me from puttting the preprint "Beyond the Chu-Construction", announced yesterday, on my web page ("no space on device", which doesn't make sense). I won't be able to fix this until I return from CTCS97 next Sunday, since our technician isn't here right now. Please wait until next Monday or Tuesday before downloading the paper. I'm sorry about this problem. -- J"urgen -- J"urgen Koslowski % If I don't see you no more in this world ITI % I meet you in the next world TU Braunschweig % and don't be late! koslowj(a)iti.cs.tu-bs.de % Jimi Hendrix (Voodoo Child)

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preprint available
by Koslowski 01 Sep '97

01 Sep '97

Dear Colleagues, An updated preprint of my paper "Beyond the Chu-construction", which I presented in Vancouver in July, is now available on my web-page http://www.iti.cs.tu-bs.de/TI-INFO/koslowj/koslowski.html The abstract follows below. From a symmetric monoidal closed (= autonomous) category Po-Hsiang Chu originally constructed a *-autonomous one, ie, a self-dual autonomous category where the duality is realized by means of a dualizing object. Recently, Michael Barr introduced an extension for the non-symmetric, but closed, case that after an initial step utilized monads and modules between them. Since these tools are well-understood in a bicategorical setting, we introduce a notion of local *-autonomy for closed bicategories that turns out to be inherited by the bicategories of monads and the bicategory of interpolads. Since the first step of Barr's construction carries over directly to the bicategorical setting, we recover his main result as an easy corollary. Furthermore, the Chu-construction at this level may be viewed as a procedure to turn the endo-1-cells of a bicategory into the objects of a new bicategory, and hence is conceptually close to the constructions of bicategories of monads and of interpolads. Best regards, -- J"urgen -- J"urgen Koslowski % If I don't see you no more in this world ITI % I meet you in the next world TU Braunschweig % and don't be late! koslowj(a)iti.cs.tu-bs.de % Jimi Hendrix (Voodoo Child)

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