COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Moduli spaces of reducible 3-manifolds

## Moduli spaces of reducible 3-manifoldsAdd to your list(s) Download to your calendar using vCal - Jan Steinebrunner (University of Copenhagen)
- Wednesday 05 June 2024, 10:15-11:00
- External.
If you have a question about this talk, please contact nobody. TRH - Topology, representation theory and higher structures In joint work with Rachael Boyd and Corey Bregman we study the classifying space B Diff(M) of the diffeomorphism group of a connected, compact, orientable 3-manifold M. By a theorem of Milnor every such M has a unique prime decomposition as a connected sum of prime 3-manifolds. The purpose of this talk is to explain how one can compute the moduli space B Diff(M) in terms of the moduli spaces of prime factors. We build a contractible space parametrising the systems of reducing spheres, which yields a concrete model of B Diff(M).We use this to prove that if M has non-empty boundary, then B Diff(M rel boundary) has the homotopy type of a finite CW complex, as was conjectured by Kontsevich. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
- External
- Featured lists
- INI info aggregator
- Isaac Newton Institute Seminar Series
- School of Physical Sciences
- bld31
Note that ex-directory lists are not shown. |
## Other listsMesopotamian Seminar Series Hadoop Future Scope Lees Knowles Lectures : Total War : The Soviet Union and the Eastern Front in a Comparative Framework## Other talksPhysics-Integrated Hybrid Modeling in Cardiac Digital Twins Rothschild Public Lecture: Inertia, Turbulence and the Concentration Field in Active Fluids EMG reading group on Gopakuma-Vafa invariants. Do we understand cosmic structure growth? Insights from new CMB lensing measurements with the Atacama Cosmology Telescope Emerging patterns of phoretic active matter: from crystalline solids to active turbulence EMG reading group on Gopakuma-Vafa invariants |