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Autumn Semester 2009

Date / Time Speaker Title Location
22 September 2009
17:15-18:15 		Prof. Dr. Bernd Kawohl
Mathematisches Institut, Universität zu Köln
Details

Zurich Colloquium in Mathematics

Title Convex sets of constant width, or why geometry can be of vital importance
Speaker, Affiliation Prof. Dr. Bernd Kawohl, Mathematisches Institut, Universität zu Köln
Date, Time 22 September 2009, 17:15-18:15
Location KO2 F 150
Abstract When does a steel pipe have an exactly circular cross section? When it features constant exterior width from each angle? That could easily by verified with a big caliper or slide gauge, and this what used to happen in the process of assembling booster rockets for the space shuttle. The authors of the corresponding manuals had overlooked that there are geometric shapes, so-called sets of constant width, that are not circles. This was a contributing factor to the Challenger desaster in 1986. In my talk I will point out that these odd sets show up in our daily life, that two of them are named after former professors of the ETH, and that there are interesting mathematical questions connected with them. The talk is directed at a general audience.
Convex sets of constant width, or why geometry can be of vital importanceread_more
KO2 F 150
27 October 2009
17:15-18:15 		Prof. Dr. Albert Cohen
Laboratoire Jacques-Louis Lions, Université Pierre et Marie Curie, Paris
Details

Zurich Colloquium in Mathematics

Title Approximating functions in high dimensions
Speaker, Affiliation Prof. Dr. Albert Cohen, Laboratoire Jacques-Louis Lions, Université Pierre et Marie Curie, Paris
Date, Time 27 October 2009, 17:15-18:15
Location KO2 F 150
Approximating functions in high dimensions
KO2 F 150
3 November 2009
17:15-18:15 		Prof. Dr. Olga Holtz
Department of Mathematics, University of California-Berkeley
Details

Zurich Colloquium in Mathematics

Title Zonotopal algebra, analysis and combinatorics
Speaker, Affiliation Prof. Dr. Olga Holtz, Department of Mathematics, University of California-Berkeley
Date, Time 3 November 2009, 17:15-18:15
Location KO2 F 150
Zonotopal algebra, analysis and combinatorics
KO2 F 150
17 November 2009
17:15-18:15 		Prof. Dr. Alan Weinstein
Department of Mathematics, University of California, Berkeley
Details

Zurich Colloquium in Mathematics

Title Symplectic categories
Speaker, Affiliation Prof. Dr. Alan Weinstein, Department of Mathematics, University of California, Berkeley
Date, Time 17 November 2009, 17:15-18:15
Location KO2 F 150
Symplectic categories
KO2 F 150
15 December 2009
17:15-18:15 		Prof. Dr. Angelo Vistoli
Scuola Normale Superiore, Pisa
Details

Zurich Colloquium in Mathematics

Title The essential dimension of a curve
Speaker, Affiliation Prof. Dr. Angelo Vistoli, Scuola Normale Superiore, Pisa
Date, Time 15 December 2009, 17:15-18:15
Location KO2 F 150
The essential dimension of a curve
KO2 F 150

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