Zurich colloquium in mathematics

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Date / Time

Speaker

Title

Location

22 September 2009
17:15-18:15

Prof. Dr. Bernd Kawohl
Mathematisches Institut, Universität zu Köln

Event Details

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

Event Details

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

Event Details

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

Event Details

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

Event Details

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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