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This seminar is held on Tuesdays at 3pm in 210 Deady.

Fall Quarter, 2012


  • October 23 - Organizational meeting.
  • October 30 - Dev Sinha (UO)
    The geometry of Mumford classes in the cohomology of mapping class groups.
  • November 6 - Soren Galatius (Stanford University)
    Homological stability for diffeomorphism groups.
  • November 13 - David Spivak (MIT)
    Operads in computer programs and brains.
  • November 20 - Deb Vicinsky (UO)
    The derivatives of the identity functor on DGL.
  • November 27 - No seminar.
  • December 1-2 - Hosting the Cascade Topology Seminar
  • December 4 - David Ayala (CalTech)
    The Ran complex and Theta_n

Winter Quarter, 2013


  • January 15 - Bill Goldman (University of Maryland)
    Complete affine 3-manifolds, Lorentzian and hyperbolic geometry
  • February 5 - Nathan Perlmutter (UO)
    Cobordism categories of manifolds with singularities
  • February 12 - Organizational meeting to discuss paper reading series.
  • February 19 - Dev Sinha (UO)
    The Atiyah completion theorem
  • February 26 - Dan Dugger (UO)
    The statement of the Segal Conjecture
  • March 5 - Hal Sadofsky (UO)
    Lin's theorem as a statement about Ext groups
  • March 12 - Ivan Horozov (Washington Univ. St. Louis)
    Reciprocity laws on algebraic varieties via iterated integrals.
  • March 15 - Johannes Ebert
    Characteristic classes for higher Torelli groups.
  • March 19 - Hal Sadofsky (UO)
    The proof of the Ext version of Lin's theorem.

Spring Quarter, 2013

  • April 9 - Dan Dugger (UO)
    An introduction to equivariant (stable) homotopy theory.


Previous years: 2012 F11 S10 W10 F09 F08 S08 W08 F07 S07 W07 F06 F05-S06 F04-S05 F03-S04 F02-S03 F00-S01 F99-S00 F98-S99 F98-S99 F97-S98