Thursday, February 04 |
Noncommutative Geometry
Time: 11:00
Speaker: Shahab Azarfar (Western) Title: "Volume Quantization from Spin Geometry II" Room: MC 107 Abstract: We try to investigate a generalization of the Heisenberg commutation relation ${[p,q]=-i \hslash}$, introduced by Chamseddine, Connes and Mukhanov as ``the one-sided and the two-sided quantization equations'', which captures the geometry. The momentum variable $p$ is encoded by the Dirac operator and the analogue of the position variable $q$ is the Feynman slash of real scalar fields over a closed even-dimensional spin manifold. Existence of a solution of the one-sided equation implies that the manifold decomposes into a disconnected sum of spheres of unit volume which represent quanta of geometry. The two-sided equation, as the refined version of the one-sided equation by involving the real structure on a spin manifold, implies the quantization of the volume of the spin manifold. Graduate Seminar
Time: 13:30
Speaker: Mitchell Riley (Western) Title: "Combinatorial Games" Room: MC 108 Abstract: In this talk we will introduce the theory combinatorial games, a simple mathematical structure with incredibly rich algebraic properties. As well as containing all real numbers, the class of games contains all ordinals, a collection of infinitesimals and plenty in between. The study of combinatorial games can be applied directly to the analysis of actual strategy games, including Chess and Go. If time permits, we will use the techniques of the talk to analyse a curious chess endgame. |
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