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Homotopy types of fibres of pfaffian maps

Presented by: 
N Vorobjov [Bath]
Date: 
Thursday 14th July 2005 - 10:00 to 11:00
Venue: 
INI Seminar Room 1
Abstract: 

We prove a tight upper bound on the number of different homotopy types of fibres of semialgebraic, quadratic or semi-Pfaffian maps in terms of formats of these maps. A similar argument leads to a tight upper bound on the sizes of finite bisimulations of Pfaffian dynamical and hybrid systems.

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons