Topology Seminar

Title: On automorphism groups of low dimensional manifolds
Speaker: Sam Nariman
Speaker Info: Northwestern University
Brief Description:
Special Note: *Note the unusual date and time!*

Abstract: We describe a local to global method by cutting a manifold into simpler pieces in a "contractible spaces of choices". In doing so, we give a simpler approach to Thurston's theorem on homeomorphisms, Cerf's theorem on comparing diffeomorphisms and homeomorphisms of three manifolds. If time permits I will describe how this approach could possibly give a different proof of Smale's conjecture (Gabai's theorem) for hyperbolic 3 manifold M which says that the group Isom(M) is homotopy equivalent to Diff(M).
Date: Wednesday, May 17, 2017
Time: 3:00 pm
Where: Lunt 104
Contact Person: Prof. John Francis
Contact email: jnkf@math.northwestern.edu
Contact Phone: 847-491-5544
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