Mathematics Dept.
  Events
UBC
Wed 26 Sep 2018, 2:50pm
Topology and related seminars
ESB 4133 (PIMS lounge)
Symmetries of the Heegaard Floer theory of 4-ended tangles
ESB 4133 (PIMS lounge)
Wed 26 Sep 2018, 2:50pm-3:45pm

Abstract

 The Heegaard Floer theory of a 4-ended tangle takes the form of
an immersed curve (with possibly non-trivial local system) on the
boundary of the tangle minus the tangle ends. The Heegaard Floer
homology of a link can be computed as the Lagrangian intersection
theory of the Heegaard Floer homologies of two 4-ended tangles
obtained by splitting the link along an embedded 2-sphere.

I will outline the construction of the tangle invariant, with
particular focus on the action of the mapping class group of the
4-punctured sphere. I will then discuss the current state of
symmetry properties for this invariant in the light of the
mutation conjecture.
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North Carolina State University
Wed 3 Oct 2018, 2:50pm
Topology and related seminars
ESB 4133 (PIMS lounge)
Spines in four-manifolds
ESB 4133 (PIMS lounge)
Wed 3 Oct 2018, 2:50pm-3:45pm

Abstract

Given two homotopy equivalent manifolds with different dimensions, it is natural to ask if the smaller one embeds in the larger one. We will discuss this problem in the case of four-manifolds homotopy equivalent to surfaces. 
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Boston College
Wed 7 Nov 2018, 2:50pm
Topology and related seminars
ESB 4133 (PIMS lounge)
TBA
ESB 4133 (PIMS lounge)
Wed 7 Nov 2018, 2:50pm-3:45pm

Abstract

 
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Vanderbilt
Wed 14 Nov 2018, 3:15pm
Topology and related seminars
TBA
Wed 14 Nov 2018, 3:15pm-4:15pm

Abstract

 
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Princeton
Wed 28 Nov 2018, 2:45pm
Topology and related seminars
ESB 4133 (PIMS)
TBA
ESB 4133 (PIMS)
Wed 28 Nov 2018, 2:45pm-3:45pm

Abstract

 
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University of Chicago
Wed 13 Feb 2019, 2:45pm
Topology and related seminars
ESB 4133 (PIMS Lounge)
tba
ESB 4133 (PIMS Lounge)
Wed 13 Feb 2019, 2:45pm-3:45pm

Abstract

 
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Elden Elmanto
Wed 6 Mar 2019, 3:15pm
Topology and related seminars
Wed 6 Mar 2019, 3:15pm-4:15pm

Abstract

 
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