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Exotic Spheres 10

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Open to the public, a learning seminar with talks from advanced graduate students.

What
  • Topology Seminar
When Thu, Apr 07, 2016
from 11:00 AM to 12:00 PM
Where 202 Ritter Hall
Contact Name
Attendees rotating presentations by: Chirasree Chatterjee, Sean Corrigan, Gerrit Smith.
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The primary source is the seminal 1963 differential-topology article, "Groups of homotopy spheres," by Michel Kervaire and John Milnor.

Gerrit Smith will finish Section 5 & 6.  Given a highly connected odd-dimensional parallelizable manifold whose middle homology is all torsion, he will show how to do parallelizable surgery to produce a contractible manifold.  In the case the dimension is congruent to 3 modulo 4, the analysis of the effect of surgery involves the Q/Z-valued torsion linking form.

(For continuity, here's a link to the previous talk.)

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