Topological representations of matroids
refreshments at 3:45pm
Introduced by Whitney in 1935, matroids are a combinatorial
abstraction of linear dependence. Most matroid theory is motivated by
graph theory or projective geometry. Beginning in the 70's matroids began
to appear in topology. I will examine several topological representations
and applications of matroids. These will include hyperplane and
pseudosphere arrangements, linear quotients of spheres by elementary
abelian p-groups, and arrangements of homotopy spheres. I will not assume
any special knowledge in topology.
Speaker's Contact Info: ebs(at-sign)polygon.math.cornell.edu
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