Fall 2021 and Spring 2022 Analysis Seminars

Analysis Seminar

The seminar will meet Tuesdays, 4:00 p.m. in VV B139, unless otherwise indicated.

If you wish to invite a speaker please contact Brian at street(at)math

Analysis Seminar Schedule

date	speaker	institution	title	host(s)
Sept 11	Simon Marshall	UW Madison	Integrals of eigenfunctions on hyperbolic manifolds
Wednesday, Sept 12	Gunther Uhlmann	University of Washington	Distinguished Lecture Series	See colloquium website for location
Friday, Sept 14	Gunther Uhlmann	University of Washington	Distinguished Lecture Series	See colloquium website for location
Sept 18	Grad Student Seminar
Sept 25	Grad Student Seminar
Oct 9	Hong Wang	MIT	About Falconer distance problem in the plane	Ruixiang
Oct 16	Polona Durcik	Caltech	Singular Brascamp-Lieb inequalities and extended boxes in R^n	Joris
Oct 23	Song-Ying Li	UC Irvine	Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold	Xianghong
Oct 30	Grad student seminar
Nov 6	Hanlong Fang	UW Madison	A generalization of the theorem of Weil and Kodaira on prescribing residues	Brian
Monday, Nov. 12, B139	Kyle Hambrook	San Jose State University	Fourier Decay and Fourier Restriction for Fractal Measures on Curves	Andreas
Nov 13	Laurent Stolovitch	Université de Nice - Sophia Antipolis	Equivalence of Cauchy-Riemann manifolds and multisummability theory	Xianghong
Nov 20	Grad Student Seminar
Nov 27	No Seminar		Title
Dec 4	No Seminar		Title
Jan 22	Brian Cook	Kent	Title	Street
Jan 29	Trevor Leslie	UW Madison	Title
Feb 5, B239	Alexei Poltoratski	Texas A&M	Title	Denisov
Friday, Feb 8	Aaron Naber	Northwestern University	Title	See colloquium website for location
Feb 12	Shaoming Guo	UW Madison	Title
Feb 19	No seminar
Feb 26	Person	Institution	Title	Sponsor
Mar 5	Person	Institution	Title	Sponsor
Mar 12	No Seminar		Title
Mar 19	Spring Break!!!
Mar 26	Person	Institution	Title	Sponsor
Apr 2	Stefan Steinerberger	Yale	Title	Shaoming, Andreas
Apr 9	Franc Forstnerič	Unversity of Ljubljana	Title	Xianghong, Andreas
Apr 16	Person	Institution	Title	Sponsor
Apr 23	Person	Institution	Title	Sponsor
Apr 30	Person	Institution	Title	Sponsor

Abstracts

Simon Marshall

Integrals of eigenfunctions on hyperbolic manifolds

Let X be a compact hyperbolic manifold, and let Y be a totally geodesic closed submanifold in X. I will discuss the problem of bounding the integral of a Laplace eigenfunction on X over Y, as the eigenvalue tends to infinity. I will present an upper bound for these integrals that is sharp on average, and briefly describe ongoing work with Farrell Brumley in which we attempt to produce eigenfunctions with very large periods.

Hong Wang

About Falconer distance problem in the plane

If E is a compact set of Hausdorff dimension greater than 5/4 on the plane, we prove that there is a point x\in E such that the set of distances between x and E has positive Lebesgue measure. Our result improves upon Wolff's theorem for dim E> 4/3. This is joint work with Larry Guth, Alex Iosevich and Yumeng Ou.

Polona Durcik

Singular Brascamp-Lieb inequalities and extended boxes in R^n

Brascamp-Lieb inequalities are L^p estimates for certain multilinear forms on functions on Euclidean spaces. In this talk we consider singular Brascamp-Lieb inequalities, which arise when one of the functions is replaced by a Calderon-Zygmund kernel. We focus on a family of multilinear forms in R^n with a certain cubical structure and discuss their connection to some patterns in positive density subsets in R^n. Based on joint works with V. Kovac and C. Thiele.

Song-Ying Li

Estimates for the first positive eigenvalue of Kohn Laplacian on a pseudo-Hermitian manifold

In this talk, I will present my recent works with my collaborators on the lower bound and upper bounds estimates for the first positive eigenvalues of Kohn Laplacian and sub-Laplacian on a strictly pseudoconvex pseudo-Hermitian CR manifold, which include CR Lichnerowicz-Obata theorem for the lower and upper bounds for the first positive eigenvalue for the Kohn Laplacian on strictly pseudoconvex hypersurfaces.

Hanlong Fan

A generalization of the theorem of Weil and Kodaira on prescribing residues

An old theorem of Weil and Kodaira says that: For a K\"ahler manifold X, there exists a closed meromorphic one-form with residue divisor D if and only if D is homologous to zero. In this talk, I will generalize Weil and Kodaira's criterion to non-K\"ahler manifolds.

Kyle Hambrook

Fourier Decay and Fourier Restriction for Fractal Measures on Curves

I will discuss my recent work on some problems concerning Fourier decay and Fourier restriction for fractal measures on curves.

Laurent Stolovitch

Equivalence of Cauchy-Riemann manifolds and multisummability theory

We apply the multisummability theory from Dynamical Systems to CR-geometry. As the main result, we show that two real-analytic hypersurfaces in $\mathbb C^2$ are formally equivalent, if and only if they are $C^\infty$ CR-equivalent at the respective point. As a corollary, we prove that all formal equivalences between real-algebraic Levi-nonflat hypersurfaces in $\mathbb C^2$ are algebraic (and in particular convergent). This is a joint work with I. Kossovskiy and B. Lamel.

Extras

Blank Analysis Seminar Template