Seminars & Colloquia Calendar
Equivariant instanton homology and group cohomology
Mike Miller (UCLA)
Location: Hill 705
Date & time: Friday, 26 October 2018 at 3:30PM - 4:30PM
Abstract: Floer's celebrated instanton homology groups are defined for integer homology spheres, but analagous groups in Heegaard Floer and Monopole Floer homology theories are defined for all 3-manifolds; these latter groups furthermore come in four flavors, and carry extra algebraic structure. Any attempt to extend instanton homology to a larger class of 3-manifolds must be somehow equivariant - respecting a certain SO(3)-action. We explain how ideas from group cohomologyand equivariant algebraic topology allow us to define four flavors of instanton homology for rational homology spheres, and how these invariants relate to existing instanton homology theories.
SPECIAL DAY AND TIME!!
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