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William E. Olsen

Publications and source records attributed to William E. Olsen.

2 recordsLinked to original sources

Weinstein Handlebodies for the Painlevé Betti Spaces

We prove that the generic fibre of the Betti moduli space associated to any of the ten Painlevé equations coincides with the result of attaching Weinstein handles along the Stokes Legendrian, and provide Weinstein handlebody diagrams for each of them in the process. We moreover extend the procedure for obtaining presentations in Gompf normal form of Weinstein manifolds obtained by attaching handles to Legendrian lifts of cooriented curves in surfaces to their unit cotangent bundle to the case where the surface may have nonempty boundary.

math.SG

Trisections and Ozsvath-Szabo cobordism invariants

Given a smooth, compact four-manifold $X$ viewed as a cobordism from the empty set to its connected boundary, we demonstrate how to use the data of a trisection map $π:X^{4} \to \mathbb{D}^{2}$ to compute the induced cobordism maps on Heegaard Floer homology associated to $X$.

math.GT