Department of Mathematics Colloquia
The talks are relaxed and non-technical and they are accessible to all the postgraduate students. They are followed by a drinks reception.
Tuesday, 9 October 2018 at 3.30 pm
Location: Franklin-Wilkins Building 3.52, Waterloo Campus
Speaker: Professor Eugenia Malinnikova (Norwegian University of Science andTechnology)
Title: An improvement of the Liouville theorem for discrete harmonic functions
Abstract: We discuss the discrete version of the Laplace operator on the standard lattice Z^2 and Z^d. On Z^2, we prove that if a harmonic function is bounded on a large portion of the lattice then it is constant. This is no longer true on Z^d, d>2. The talk is based on a joint work with L. Buhovsky, A. Logunov and M. Sodin.
Information about our past colloquia is available here:
Upcoming colloquia will be advertised on our events calendar.