Topology Seminar
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Mon, 09/10/2006 15:45 |
Marc Lackenby (Oxford) |
Topology Seminar  |
L3 |
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Mon, 16/10/2006 15:45 |
Michael Crabb (University of Aberdeen) |
Topology Seminar |
L3 |
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Mon, 23/10/2006 14:15 |
Marc Rieffel (Berkeley and INI) |
Topology Seminar |
L3 |
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Mon, 23/10/2006 15:45 |
Keith Hannabus (Oxford) |
Topology Seminar |
L3 |
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Mon, 23/10/2006 17:00 |
Anthony Wassermann (Luminy and INI) |
Topology Seminar |
L3 |
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Mon, 30/10/2006 15:45 |
Ulrike Tillmann |
Topology Seminar |
L3 |
| 1. Introduction and survey of the cohomological results This will be a relatively gentle introduction to the topologist's point of view of Riemann's moduli space followed by a description of its rational and torsion cohomology for large genus. | |||
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Mon, 06/11/2006 15:45 |
Topology Seminar |
L3 | |
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Mon, 13/11/2006 15:45 |
Prof Ulrike Tillmann (Oxford) |
Topology Seminar |
L3 |
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Mon, 20/11/2006 15:45 |
Alastair Hamilton (Bonn) |
Topology Seminar |
L3 |
| There is a construction, due to Kontsevich, which produces cohomology classes in moduli spaces of Riemann surfaces from the initial data of an A-infinity algebra with an invariant inner product -- a kind of homotopy theoretic notion of a Frobenius algebra. In this talk I will describe a version of this construction based on noncommutative symplectic geometry and use it to show that homotopy equivalent A-infinity algebras give rise to cohomologous classes. I will explain how the whole framework can be adapted to deal with Topological Conformal Field Theories in the sense of Costello, Kontsevich and Segal. | |||
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Mon, 27/11/2006 15:45 |
Ulrike Tillmann (Oxford) |
Topology Seminar |
L3 |
