Department of

# Mathematics

Seminar Calendar
for events the day of Tuesday, May 9, 2017.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
      April 2017              May 2017              June 2017
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
1       1  2  3  4  5  6                1  2  3
2  3  4  5  6  7  8    7  8  9 10 11 12 13    4  5  6  7  8  9 10
9 10 11 12 13 14 15   14 15 16 17 18 19 20   11 12 13 14 15 16 17
16 17 18 19 20 21 22   21 22 23 24 25 26 27   18 19 20 21 22 23 24
23 24 25 26 27 28 29   28 29 30 31            25 26 27 28 29 30
30


Tuesday, May 9, 2017

11:00 am in 243 Altgeld Hall,Tuesday, May 9, 2017

#### Hirzebruch-Zagier cycles and a p-adic Gross-Zagier formula

###### Iván Blanco-Chacón (University College Dublin)

Abstract: Part III of III on Hida Families, Hilbert Modular Forms and Arithmetic Applications. Extended abstract at http://math.uiuc.edu/~duursma/HidaFamilies-IvanBC.html

1:00 pm in 347 Altgeld Hall,Tuesday, May 9, 2017

#### Sharp Poincare' inequalities in a class of non-convex sets

###### Jeffrey Langford   [email]

Abstract: A classic result in spectral theory of PDEs by Payne and Weinberger states that the lowest nonzero Neumann eigenvalue of the Laplacian on a convex domain of diameter D can be estimated below by pi^2/D^2. I will discuss an analogue of this result for a particular class of non-convex domains.

4:00 pm in 245 Altgeld Hall,Tuesday, May 9, 2017