Freedman Seminar Speaker: Slava Krushkal (University of Virginia) Title: 4-manifold topology and collision rank of groups Abstract: I will introduce collision rank and show that groups of finite collision rank are good in the sense of topological 4-manifold theory. Finitely generated groups of collision rank two are shown to exist outside the class of subexponentially […]
Member Seminar Speaker: Lorenzo Riva, CMSA Title:Â Un-extending extended TQFTs Abstract:Â An ordinary topological quantum field theory (TQFT) assigns invariants to manifolds of dimensions n in a way that is compatible with cutting-and-gluing along submanifolds of dimension n-1. An extended TQFT assigns invariants that are also compatible with cutting along submanifolds of all codimensions. One way to […]
Workshop on Lagrangian Floer Theory and Applications Dates: September 28 – October 2, 2026 Location: CMSA G10, 20 Garden St., Cambridge MA 02138 This workshop is part of the Lagrangian Floer Theory and Applications Program In Person Registration Zoom Webinar Registration Speakers will include: Mohammed Abouzaid, Stanford University Kenneth Blakey, MIT Ciprian Bonciocat, Stanford Soham […]
Colloquium Speaker: Mehran Kardar, MIT Title: Life on a Noisy Seascape: Extinction, Growth, and Diversity Abstract: Populations and communities rarely evolve in static environments; their fitness landscapes fluctuate across space and time, forming what may be called a noisy seascape. This talk examines how such variability modifies classical models of population dynamics and community stability. Beginning from the […]
Joint Math/CMSA Geometry and Quantum Theory Seminar
CMSA Q&A Seminar Speaker: Denis Auroux, Harvard Title: What is Lagrangian Floer homology?
AI for the Working Mathematician Speaker: Harold Williams, USC Title: TBA
Geometry and Mathematical Physics Seminar Speaker: Tobias Ekholm, Uppsala
Member Seminar Speaker: Aaron Landesman
Colloquium Speaker: Subhabrata Sen (Harvard)
Joint Math/CMSA Geometry and Quantum Theory Seminar
CMSA Q&A Seminar Speaker: Shaoyun Bai, MIT Title: What is a virtual fundamental cycle? (ICM Series: On the work of John Pardon) Abstract: One of Pardon’s important contribution to symplectic topology is a new approach to constructing virtual fundamental cycles/chains for moduli spaces of pseudo-holomorphic maps. As a former PhD student of John, my own […]