SIXTH ANNUAL COLLOQUIUMFEST
organized by the
Research Unit "Algebra and Logic"
in the College of Arts and Science
106 Wiggins Road
Saskatoon, SK, S7N 5E6, Canada
Phone: (306) 966-6081 - Fax: (306) 966-6086

The Sixth Annual Colloquiumfest will take place in Saskatoon, April 1 and 2, 2005. The theme of the Colloquiumfest this year is

• Jacob Cimpric, University of Ljubljana (co-organizer)
• Olivier Demanze, University of Lille 1
• Douglas Farenick, University of Regina
• J. William Helton, University of California at San Diego
• Igor Klep, University of Konstanz
• Mikhail Kotchetov, University of Southern California
• Mihai Putinar, University of California at Santa Barbara
• Fernando Szechtman, University of Regina

The Sixth Annual Colloquiumfest is being generously supported by the Office of the Vice-President Academic and the Science Division of the College of Arts and Science. Anyone interested in taking part in this event may contact one of the members of the Research Unit "Algebra and Logic" for additional information.

Friday April 1 afternoon ARTS 214
3:15-3:25 Jim Basinger, Associate Dean of Science, College of Arts & Science, Opening Remarks
3:30-4:20 J. William Helton, University of California at San Diego, Noncommutative Semialgebraic Geometry with an Engineering Bent
4:30-5:20 Mihai Putinar, University of California at Santa Barbara, Non-negative poly-harmonic polynomials on the unit ball of C^n
5:30-6:00 Jacob Cimpric, University of Ljubljana, A representation theorem for quadratic modules on *-rings

BANQUET 7:00 Friday evening Marquis Hall. Cash bar 6:30

Saturday April 2 morning ARTS 214
9:00-9:50 Fernando Szechtman, University of Regina, The Steinberg lattice of a finite Chevalley group and its modular reduction
10:00-10:50 Douglas Farenick, University of Regina, Completely positive linear maps on operator systems
11:00-11:50 Salma Kuhlmann, Research Unit Algebra & Logic, The Invariant Moment Problem

LUNCH 12:00-1:20 Alexander's Restaurant (next to the campus, corner of College and Cumberland)

Saturday April 2 afternoon ARTS 214
1:30-2:20 Olivier Demanze, University of Lille 1, Applications of multi-dimensional Moment Problems to polynomial representations and subnormality.
2:30-3:20 Murray Marshall, Research Unit Algebra & Logic, Representations of non-negative polynomials
3:30-4:20 Mikhail Kotchetov, University of Southern California, Orderability of Hopf algebras
4:30-5:20 Igor Klep, University of Konstanz, *-orderable groups

DINNER 7:30 Genesis Family Restaurant (across town, 901, 22nd St. W.)

Seminar talks related to the theme(s) will take place in the time period surrounding the Colloquiumfest proper; see Algebra and Logic Seminar