Computational Topology of Equivariant Maps from Spheres to Complements of Arrangements

Details Computational Topology of Equivariant Maps from Spheres to Complements of Arrangements Computational Topology of Equivariant Maps from Spheres to Complements of Arrangements

2004-03-09

arxiv.org/abs/math/0403161v1

Mathematics

Algebraic Topology

Scientific paper

We use a well known problem in discrete and computational geometry (partitions of measures by $k$-fans) as a motivation and as a point of departure to illustrate many aspects, both theoretical and computational, of the problem of calculating the obstructions for the existence of equivariant maps. A variety of techniques are introduced and discussed with the emphasis on concrete and explicit calculations. This eventually leads (Theorems 18 and 19) to an almost exhaustive analysis of when such maps do or do not exist in the particular case of interest.

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