Department of

# Mathematics

Seminar Calendar
for events the day of Wednesday, April 19, 2017.

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Questions regarding events or the calendar should be directed to Tori Corkery.
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30


Wednesday, April 19, 2017

4:00 pm in 245 Altgeld Hall,Wednesday, April 19, 2017

#### An introduction to enumerative geometry

###### Yun Shi (UIUC Math)

Abstract: One important question in enumerative geometry concerns how many curves there are on a Calabi-Yau 3-fold. In this talk, I will present one of the approaches to the classical problem: there are 27 lines on a smooth cubic surface. Motivated by this approach, we will discuss the modern set-up to answer the curve counting questions, in particular its applications to Donaldson-Thomas theory.