Montreal Analysis Seminar

Seminars are usually held on Mondays or Fridays at Concordia, McGill or Universite de Montreal
For suggestions, questions etc. please contact Dmitry Jakobson (jakobson@math.mcgill.ca), Iosif Polterovich (iossif@dms.umontreal.ca) or Alina Stancu (alina.stancu@concordia.ca)


FALL 2017

Joint Analysis + Geometric Analysis seminar
Friday, November 10, 13:30-14:30, McGill, Room 920
Dan Pollack (U. Washington)
Title TBA

Friday, November 3, 13:30-14:30, McGill, Room 920
Niko Laaksonen (McGill)
Title TBA

Monday, October 16, 13:30-14:30, McGill, Room 920 (to be confirmed)
Frederic Naud (Avignon)
Title TBA

Spectral Theory seminar
Monday, September 25, 14:00-15:00, UdeM, Room 5340/5380
Lise Turner (McGill)
Distribution of coefficients of rank polynomials for random sparse graphs
Abstract: We study the distribution of coefficients of rank polynomials of random sparse graphs. We first discuss the limiting distribution for general graph sequences that converge in the sense of Benjamini-Schramm. Then we compute the limiting distribution and Newton polygons of the coefficients of the rank polynomial of random d-regular graphs. This is joint work with S. Norin and D. Jakobson
Monday, September 18, 13:00-14:00, McGill, Burnside 920
Alexander Olevskii (Tel Aviv University)
Around uncertainty principle
Abstract: How "small" the support and the spectrum of a function in R^d can be? I'll present an introduction to the subject and discuss new results joint with Fedor Nazarov and with my student T.Amit.
Monday, September 18, 14:00-15:00, Burnside 920
Alex Iosevich (Rochester University)
Finite point configuration in continuous, discrete and arithmetic settings
Abstract: The basic question we ask is, how "large" does a subset of a vector space need to be to ensure that it contains a given geometric configurations, or a positive proportion of congruence classes of a given geometric configuration? This problem is connected with many interesting questions in analysis, number theory and combinatorics, including the sum-product phenomenon, the local smoothing conjecture for the wave equation and various notions of rigidity in classical geometry. We will survey some recent results in a variety of settings and describe the ideas behind them.
Friday, September 15, 13:30-14:30, McGill, Burnside 920
Eli Liflyand (Bar Ilan University)
Asymptotic relations for the Fourier transform of a function of bounded variation
Abstract: Earlier and recent one-dimensional estimates and asymptotic relations for the cosine and sine Fourier transform of a function of bounded variation are refined in such a way that become applicable for obtaining multidimensional asymptotic relations for the Fourier transform of a function with bounded Hardy variation.
Monday, August 28, Univ. de Montreal, 13:30-14:30, Room 5183
Alexei Penskoi (Moscow State University and Higher School of Economics)
An isoperimetric inequality for Laplace eigenvalues on the sphere and the projective plane
Abstract: The first subject of this talk is an isoperimetric inequality for the second non-zero eigenvalue of the Laplace-Beltrami operator on the real projective plane (based on a joint paper with N. Nadirashvili). For a metric of area 1 this eigenvalue is not greater than 20\pi. This value could be attained as a limit on a sequence of metrics of area 1 on the projective plane converging to a singular metric on the projective plane and the sphere with standard metrics touching in a point such that the ratio of the areas of the projective plane and the sphere is 3:2. The second subject of this talk is a very recent result (joint paper with M. Karpukhin, N. Nadirashvili and I. Polterovich) about an isoperimetric inequality for Laplace eigenvalues on the sphere. For a metric of area 1 the k-th eigenvalue is not greater than 8\pi k. This value could be attained as a limit on a sequence of metrics of area 1 on the sphere converging to a singular metric on k spheres with standard metrics of equal radius touching in a point.

2016/2017 Seminars

2015/2016 Seminars

2014/2015 Seminars

Fall 2013 Seminars

Winter 2014 Seminars

2012/2013 Seminars

2011/2012 Seminars

2010/2011 Seminars

2009/2010 Seminars

2008/2009 Seminars

2007/2008 Seminars

2006/2007 Seminars

2005/2006 Analysis Seminar

2004/2005 Seminars

2004/2005 Seminar in Nonlinear Analysis and Dynamical Systems

2003/2004 Working Seminar in Mathematical Physics

2002/2003 Seminars

2001/2002 Seminars

2000/2001 Seminars

1999/2000 Seminars