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Combinatorial Algebraic Geometry: Weierstrass points on algebraic curves and tropical curves

Harry Richman (University of Washington)
Friday, February 10, 2023 - 10:30am to 11:20am
Thomson Hall (THO) 325

An algebraic curve of high genus can be a difficult landscape to navigate. In such a situation, we would like a set of well-placed landmarks as a guide. This is what Weierstrass points provide for us. We will cover the definition of Weierstrass points, and overview results that quantify in what sense they are "well-placed". We will also mention some applications in algebraic geometry and tropical geometry, in particular:

  • When does an algebraic / tropical curve have finitely many automorphisms?

  • When is the moduli space of algebraic / tropical curves "general type"?

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