Forthcoming Seminars
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Tue, 12/05/2009 17:00 |
Olga Maleva (Birmingham) |
Functional Analysis Seminar  |
L3 |
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Tue, 12/05/2009 17:00 |
Erika Damian (University of East Anglia) |
Algebra Seminar |
L2 |
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Wed, 13/05/2009 11:30 |
Nicholas Cooney (University of Oxford) |
Algebra Kinderseminar |
ChCh, Tom Gate, Room 2 |
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Thu, 14/05/2009 09:30 |
Michael Harris (Univ. Paris 7) |
Special Lecture |
Taught Course Center |
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Thu, 14/05/2009 11:00 |
Prof. Boris Zilber (Oxford) |
Advanced Logic Class |
SR1 |
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Thu, 14/05/2009 12:15 |
Niels Gammelgaard (Aarhus) |
Junior Geometry and Topology Seminar |
SR1 |
| I will briefly describe a differential geometric construction of Hitchin's projectively flat connection in the Verlinde bundle, over Teichmüller space, formed by the Hilbert spaces arising from geometric quantization of the moduli space of flat connections on a Riemann surface. We will work on a general symplectic manifold sharing certain properties with the moduli space. Toeplitz operators enter the picture when quantizing classical observables, but they are also closely connected with the notion of deformation quantization. Furthermore, through an intimate relationship between Toeplitz operators, the Hitchin connection manifests itself in the world of deformation quantization as a connection on formal functions. As we shall see, this formal Hitchin connection can be used to construct a deformation quantization, which is independent of the Kähler polarization used for quantization. In the presence of a symmetry group, this deformation quantization can (under certain cohomological conditions) be constructed invariantly. The talk presents joint work with J. E. Andersen. | |||
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Thu, 14/05/2009 13:00 |
Zhongmin Qian (Oxford) |
Mathematical Finance Internal Seminar |
DH 1st floor SR |
| This talk will be based on a joint work with Professor Terry Lyons and Mr Gechun Liang (OMI). I will explain a new approach to define and to solve a class of backward dynamic systems including the well known examples of non-linear backward SDE. The new approach does not require any kind of martingale representation or any specific restriction on the probability base in question, and therefore can be applied to a much wider class of backward systems. | |||
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Thu, 14/05/2009 14:00 |
Prof. Ivan Graham (University of Bath) |
Computational Mathematics and Applications |
Comlab |
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Thu, 14/05/2009 14:30 |
Geordie Williamson (Oxford) |
Representation Theory Seminar |
L3 |
| I will start by explaining how the geometry of certain complex algebraic varieties (nilpotent cones, Schubert varieties etc.) has implications for modular representation theory, and vice versa, via the theory of perverse sheaves. I will give some examples and try to give a feeling for the fascinating interplay between algebra, geometry and topology that arises. In the second half of the talk I will discuss joint work with Carl Mautner and Daniel Juteau in which we introduce a new class of sheaves, which behave in some respects like tilting modules. | |||
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Thu, 14/05/2009 16:00 |
Michael Harris (Paris) |
Number Theory Seminar |
L3 |
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Thu, 14/05/2009 16:30 |
Nicolai Meinshausen (Department of Statistics, Oxford) |
Differential Equations and Applications Seminar |
DH 1st floor SR |
| I will discuss the so-called Lasso method for signal recovery for high-dimensional data and show applications in computational biology, machine learning and image analysis. | |||
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Thu, 14/05/2009 17:00 |
TBA |
Logic Seminar |
L3 |
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Fri, 15/05/2009 14:00 |
Dr Matthew Turner (Warwick University) |
Mathematical Biology and Ecology Seminar |
L3 |
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Mon, 18/05/2009 12:00 |
Fay Dowker (Imperial College) |
String Theory Seminar |
L3 |
| Abstract: Despite the high regard in which physicists hold General Relativity, the spacetime nature of reality has not yet fully been taken to heart in addressing the question of the interpretation of quantum mechanics. Partial progress was made by Dirac and Feynman by casting the dynamical content of quantum theory in terms of a Sum Over (spacetime) Histories (SOH). Recently it has been suggested by Sorkin that this SOH is part of an interpretive framework in which the rules of inference that are used to reason about physical reality are themselves subject to dynamical law. Just as General Relativity showed that geometry is not fixed and absolute, so Quantum Mechanics may be telling us that logical rules of inference are not fixed but part of physics. | |||
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Mon, 18/05/2009 14:15 |
Gabriele Mondello (Imperial) |
Geometry and Analysis Seminar |
L3 |
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Mon, 18/05/2009 14:15 |
Dr Jordan Stoyanov (Newcastle) |
Stochastic Analysis Seminar |
Oxford-Man Institute |
| If a distribution, say F, has all moments finite, then either F is unique (M-determinate) in the sense that F is the only distribution with these moments, or F is non-unique (M-indeterminate). In the latter case we suggest a method for constructing a Stieltjes class consisting of infinitely many distributions different from F and all having the same moments as F. We present some shocking examples involving distributions such as N, LogN, Exp and explain what and why. We analyse conditions which are sufficient for F to be M-determinate or M-indeterminate. Then we deal with recent problems from the following areas: (A) Non-linear (Box-Cox) transformations of random data. (B) Distributional properties of functionals of stochastic processes. (C) Random sums of random variables. If time permits, some open questions will be outlined. The talk will be addressed to colleagues, including doctoral and master students, working or having interests in the area of probability/stochastic processes/statistics and their applications. | |||
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Mon, 18/05/2009 15:30 |
Peter J. Olver (University of Minnesota) |
OxPDE Lunchtime Seminar |
Gibson 1st Floor SR |
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Mon, 18/05/2009 15:45 |
Karl-Theodor Sturm |
Stochastic Analysis Seminar |
Oxford-Man Institute |
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Mon, 18/05/2009 15:45 |
Carl-Friedrich B¨odigheimer (Bonn) |
Topology Seminar |
L3 |
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Mon, 18/05/2009 16:00 |
Sebastian Pancratz (Mathematical Insitute, Oxford) |
Junior Number Theory Seminar |
SR1 |
| This is the first (of two) talks which will be given concerning the Birch–Swinnerton-Dyer Conjecture. | |||
