Mathematics Calendar 
March 04, 2013
| Monday, March 04 |
Noncommutative Geometry
Time: 14:30
Speaker: Travis Ens (Western) Title: "NCG Learning Seminar: Loop expansion of Feynman integrals, 1-particle irreducible graphs, and Cayley's tree formula" Room: MC 107 Abstract: Algebra Seminar
Time: 15:30
Speaker: Jessie Yang (McMaster) Title: "Initial ideals and tropical Severi varieties" Room: MC 108 Abstract: Tropical geometry is a systematic development of the fundamental concept, "degenerations". In this talk, I will make this statement precise in the algebraic view point, namely ''Initial ideals". We apply the tropical approach to the classical objects in algebraic geometry, "Severi varieties". Severi varieties are spaces whose points correspond to the plane curves with a given number of nodal singular points. In this tropical approach, we can obtain purely combinatorial results on Severi varieties which involve subdivisions of polygons. |
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