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CAGE: Philadelphia Area Combinatorics and Alg. Geometry Seminar

Thursday, October 30, 2014 - 2:30pm

Tara Holm

Cornell

Location

University of Pennsylvania

DRL 4E9

Toric symplectic manifolds can classified by their moment polytope, and their topology (ordinary and equivariant cohomology) can be read directly from the polytope. A folded symplectic form on a manifold is a closed 2-form with the mildest possible degeneracy along a hypersurface. A special class of folded symplectic manifolds are the origami manifolds. In this talk we examine the toric origami case: we will describe how toric origami manifolds can also be classified by their combinatorial moment data. We will then explore some theorems, almost-theorems, and conjectures about the topology of toric origami manifolds. We will include a number of geometric and combinatorial examples