Event time:

Tuesday, March 3, 2020 - 6:00pm

Location:

LOM 206

Speaker:

Yuchen Liu

Speaker affiliation:

Yale University

Event description:

The classical Descartesâ€™ theorem states that the total angular defect of a convex polyhedron is 4\pi. Such a polyhedron can be viewed as a flat surface homeomorphic to a sphere with cone singularities at vertices. We will explore the situation in both spherical geometry and hyperbolic geometry, use the Gauss-Bonnet theorem, and culminate the concept of stability.

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