Research lectures, seminars and events
The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but wish to enquire about attending one of the events please contact the organiser or host department.
Pure Maths Colloquium: Contact structures, instantons, and Floer homology
Instanton homology was developed by Floer in the 1980s as a powerful invariant of 3-manifolds. In recent years, it has had some striking applications in low-dimensional topology which were inspired by newer, more accessible relatives such as Heegaard Floer homology. I will describe some joint work with John Baldwin along these lines, in which we use invariants of contact structures on 3-manifolds to study the fundamental groups of 3-manifolds which bound Stein surfaces, and to prove that a knot invariant called Khovanov homology detects the trefoil.
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