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Western Mathematics Calendar

March 2020

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
1	2	3	4	5 Basic Notions Seminar 15:30 Apurva Nakade (Western) What is a Spectrum? Basic Notions Seminar Speaker: Apurva Nakade (Western) "What is a Spectrum?" Time: 15:30 - 16:30 Room: MC 107 By the Brown representability theorem, cohomology theories in algebraic topology are represented by spectra. While it is easy to define an additive structure on these spectrum objects, describing a product structure that reflects the underlying product on cohomology is a surprisingly difficult task. Starting from the classical notion of cohomology theories and sequential spectrum, I will describe how this problem is solved using orthogonal spectra, and time permitting introduce $E_\infty$ ring spectra. This talk should be accessible to grad students who know basic algebraic topology, specifically, Brown representability.	6	7
8	9	10	11	12 Colloquium 15:30 Carlo Rovelli (centre de physique theorique, universite de aix-marseille) Loop Quantum Gravity: ideas, results and perspectives Colloquium Speaker: Carlo Rovelli (centre de physique theorique, universite de aix-marseille) "Loop Quantum Gravity: ideas, results and perspectives" Time: 15:30 - 16:30 Room: MC 107 Loop Quantum Gravity is a widely studied mathematical description of the quantum properties of spacetime and its quantum dynamics. It reduces to classical General Relativity in a suitable classical limit and is free from ultraviolet divergences. It finds tentative applications in the physics of the early universe and black holes. I will illustrate its mathematical structure, the physical ideas on which it relies, and the current attempts to find empirical support for it.	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30 Geometry and Topology 15:30 Marc Stephan (Augsburg) CANCELLED Geometry and Topology Speaker: Marc Stephan (Augsburg) "CANCELLED" Time: 15:30 - 16:30 Room: MC 108	31

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