Past Seminars › Seminar Series

Geometry and Analysis Seminar (past)

Mon, 18/01/2010
14:15 		Nicholas Manton (Cambridge) Geometry and Analysis Seminar Add to calendar L3
Hyperbolic Vortices
TBA
Mon, 30/11/2009
14:15 		Daniel Stevenson (Glasgow) Geometry and Analysis Seminar Add to calendar L3
The basic bundle gerbe on unitary groups, revisited
Mon, 23/11/2009
14:15 		Harry Braden (Edinburgh) Geometry and Analysis Seminar Add to calendar L3
Monopoles, Periods and Problems
The modern approach to integrability proceeds via a Riemann surface, the spectral curve. In many applications this curve is specified by transcendental constraints in terms of periods. I will highlight some of the problems this leads to in the context of monopoles, problems including integer solutions to systems of quadratic forms, questions of real algebraic geometry and conjectures for elliptic functions. Several new results will be presented including the uniqueness of the tetrahedrally symmetric monopole.
Mon, 09/11/2009
14:15 		Michael Cowling (Birmingham) Geometry and Analysis Seminar Add to calendar
K-Theory Day Add to calendar 		L3
Lattices in Simple Lie Groups: A Survey
Lattices in semisimple Lie groups have been studied from the point of view of number theory, algebraic groups, topology and geometry, and geometric group theory. The Fragestellung of one line of investigation is to what extent the properties of the lattice determine, and are determined by, the properties of the group. This talk reviews a number of results about lattices, and in particular looks at Mostow–Margulis rigidity.
Mon, 26/10/2009
14:15 		Carlos Simpson (Nice) Geometry and Analysis Seminar Add to calendar L3
Partial opers
Mon, 15/06/2009
14:15 		Wilhelm Klingenberg (Durham) Geometry and Analysis Seminar Add to calendar L3
Index of umbilics via mean curvature flow
Mon, 08/06/2009
14:15 		Eric Swenson (Brigham Young) Geometry and Analysis Seminar Add to calendar L3
$ \pi $-convergence: The dynamics of isometries of Hadamard spaces on the boundary
It a classical result from Kleinian groups that a discrete group, $ G $, of isometries of hyperbolic k-space $ \Bbb H^k $ will act on the boundary sphere, $ S^{k-1} $, of $ \Bbb H^k $ as a convergence group. That is: For every sequence of distinct isometries $ (g_i)\subset G $ there is a subsequence $ {g_i{_j}) $ and points $ n,p \in \S^{k-1} $ such that for $ x \in S^{k-1} -\{n\} $, $ g_i_{j}(x) \to p $ uniformly on compact subsets
Mon, 01/06/2009
14:15 		Oscar Randal-Williams (Oxford) Geometry and Analysis Seminar Add to calendar L3
Monoids of moduli spaces of manifolds
Joint work with Soren Galatius. We study categories C of d-dimensional cobordisms, from the perspective of Galatius, Madsen, Tillmann and Weiss. Their main result is the determination of the homotopy type of the classifying-space of such cobordism categories, as the infinite loop space of a certain Thom spectrum. One can investigate subcategories D of C having the property that the classifying-space BD is equivalent to BC, the smaller such D one can find the better. We prove that in may cases of interest, D can be taken to be a homotopy commutative monoid. As a consequence, the stable cohomology of many moduli spaces of surfaces can be identified with that of the infinite loop space of certain Thom spectra.
Mon, 11/05/2009
14:15 		Peter Zograf (St Petersburg) Geometry and Analysis Seminar Add to calendar L3
Volumes of moduli spaces of algebraic curves
Mon, 09/03/2009
14:15 		Walter Neumann Geometry and Analysis Seminar Add to calendar L3
Quasi-isometry of 3-manifold groups
Thu, 26/02/2009
12:00 		Dusa McDuff (Columbia) Geometry and Analysis Seminar Add to calendar L3
Some 6-dimensional Hamiltonian S^1-manifolds

For any corrections/updates to these listings, please contact seminars [-at-] maths [dot] ox [dot] ac [dot] uk.

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