- Series
- Geometry Topology Working Seminar
- Time
- Friday, October 17, 2025 - 2:00pm for 1.5 hours (actually 80 minutes)
- Location
- Skiles 006
- Speaker
- Randy Van Why – Georgia Tech
- Organizer
- John Etnyre
This series will tie together algebraic, complex analytic, symplectic, and contact geometries together in one coherent story. This will be done via the study of a series of couplets from different fields of geometry:
Algebraic manifolds:
Affine and quasi-projective varieties (non-compact models)
Projective varieties (compact models)
Complex manifolds:
Stein manifolds
Stein compactifications
Symplectic manifolds:
Liouville/ Weinstein geometry
Compact Kahler manifolds
Depending on how long it takes to discuss these items, I will also attempt to include discussions on:
• Biran-Giroux decompositions of symplectic manifolds • Boothby-Wang bundles and contact plumbings of these • Milnor's fibration theorem for isolated singularities and connections to open book decompositions and Lefschetz fibrations • Open questions and interesting avenues of research
Most of our discussion will, as a side effect, outline the topological structure behind Type IIA String theory (the "topological A-model") which requires a 6-dimensional Calabi-Yau (Kahler) background.