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Fall 2018 Joseph Ritt Lectures

Come join us on Wednesday, October 31, 2018 between 4:30 – 5:30pm in Rm 520 and Thursday, November 1, 2018 between 5:30 – 6:30pm in Rm 417, Professor Eugenia Malinnikova (Norwegian University of Science and Technology) will be giving a special lecture titled An improvement of Liouville’s theorem for discrete harmonic functions.

ABSTRACT
“The classical Liouville theorem says that if a harmonic function on the plane is bounded then it is a constant. At the same time for any angle on the plane, there exist non-constant harmonic functions that are bounded everywhere outside the angle. The situation is different for discrete harmonic functions on the standard square lattices. The following strong version of the Liouville theorem holds on the two-dimensional lattice. If a discrete harmonic function is bounded on 99% of the lattice then it is constant. Simple counter-example shows that in higher dimensions such improvement is no longer true.

We will present some discrete methods, compare the behavior of continuous and discrete harmonic functions and discuss some related questions and motivation.
The lectures are based on a joint work with L. Buhovsky, A. Logunov and M. Sodin.”

Tea will be served at 4 pm in 508 Mathematics.

*Joseph Fels Ritt Lecture Flyer*

Time & Location

Wednesday, October 31, 2018 between 4:30 – 5:30 pm in Rm 520

&

Thursday, November 1, 2018 between 5:30 – 6:30 pm in Rm 417

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Sep. 26: Ailana Fraser (UBC)

Title: The geometry of extremal eigenvalue problems
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Sep. 12: Bernard Julia (ENS, Paris)

Title: Exceptional Lie group families
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Oct 11: Alex Wright (Stanford)

Title: Dynamics, geometry, and the moduli space of Riemann surfaces
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Feb. 08: Jacob Lurie (Harvard)

Title: Tamagawa Numbers via Nonabelian Poincare Duality
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Inaugural Fall 2016 Eilenberg Lecture: Thursday, September 8th

The first lecture of Denis Auroux’s Eilenberg lecture series will be held as follows:

Thursday, September 8th, 1.10-2.25pm
520 Math

Series title: Fukaya categories and mirror symmetry

The subsequent lectures will be held weekly, at the same time and place.

We hope to see many of you there!

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Mar 9: Laura DeMarco (Northwestern)

Title: Complex dynamics and elliptic curves

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Feb 24: John Etnyre (Georgia Tech)

Title: Curvature and contact topology
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Feb 17: Boris Khesin (Toronto)

Title: Fluids, vortex membranes, and skew-mean-curvature flows

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Feb 10: Jean-Michel Bismut (Orsay)

Title: The hypoelliptic Laplacian
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