Online Asymptotic Geometric Analysis Seminar


Welcome to the Online AGA seminar webpage!

Note that in Spring 2023, we are changing the seminar time! Now it is 9:30 am EST on Thursdays, rather than 10:30 am EST on Tuesdays.

If you are interested in giving a talk, please let us know. Also, please suggest speakers which you would like to hear speak. Most talks are 50 minutes, but some 20-minute talks will be paired up as well. The talks will be video recorded conditioned upon the speakers' agreement. PLEASE SHARE THE SEMINAR INFO WITH YOUR DEPRARTMENT AND ANYONE WHO MAY BE INTERESTED! Please let the organizers know if you would like to be added to the mailing list.



The Zoom link to join the seminar

The seminar "sea-side" social via gather.town for after the talk




Note that on Thursdays, the lectures start at:

6:30am in Los-Angeles, CA
7:30am in Edmonton, AB
8:30am in Columbia MO; College Station, TX; Chicago, IL
9:30am in Kent, OH; Atlanta, GA; Montreal; New York, NY
10:30am in Rio de Janeiro, Buenos Aires
2:30pm (14:30) in London
3:30pm (15:30) in Paris, Milan, Budapest, Vienna
4:30pm (16:30) in Tel Aviv.



Abstracts, slides, videos of the past talks

Schedule Spring 2023:


  • Thursday, January 19, 2023, 9:30AM (New York, NY time)

    Francesco Chiacchio, University of Naples, Italy

    Topic: Talenti type results for linear and nonlinear Robin problems

    Abstract: We consider the p-Poisson equation with Robin boundary conditions, where the Robin parameter is a function. By means of some weighted isoperimetric inequalities, we provide various sharp bounds for the solutions to the problems under consideration. We also derive some Faber-Krahn type inequalities.




  • Thursday, January 26, 2023, 9:30AM (New York, NY time)

    Steven Hoehner, Longwood University

    Topic: An intrinsic volume metric for the class of convex bodies in $\mathbb{R}^n$

    Abstract: A new intrinsic volume metric is introduced for the class of convex bodies in $\mathbb{R}^n$. As an application, an inequality is proved for the asymptotic best approximation of the Euclidean unit ball by arbitrarily positioned polytopes with a restricted number of vertices under this metric. This result improves the best known estimate, and shows that dropping the restriction that the polytope is contained in the ball or vice versa improves the estimate by at least a factor of dimension. The same phenomenon has already been observed in the special cases of volume, surface area and mean width approximation of the ball.




  • Thursday, February 2, 2023, 9:30AM (New York, NY time)

    Victor Reis, University of Washington, Seattle, WA

    Topic: TBA

    Abstract: TBA.




  • Thursday, February 9, 2023, 11:30AM (New York, NY time) -- NOTE THE SPECIAL TIME

    Paul Simanjuntak, University of Missouri, Columbia, USA

    Topic: TBA

    Abstract: TBA.




  • Thursday, February 16, 2023, 9:30AM (New York, NY time)

    Rotem Assouline, Weizmann Institute of Science, Israel

    Topic: Brunn-Minkowski for path spaces on Riemannian surfaces

    Abstract: We study the Brunn-Minkowski inequality on a Riemannian surface, where in the definition of the Minkowski sum, geodesics are replaced by an arbitrary family of constant-speed curves. We give a necessary and sufficient condition for such a family to satisfy the same Brunn-Minkowski inequality as the family of lines in the plane. Horocycles in the hyperbolic plane provide an example. Joint work with Bo'az Klartag.




  • Thursday, February 23, 2023, 10:30AM (New York, NY time) -- NOTE THE SPECIAL TIME

    Petros Valettas, University of Missouri, Columbia

    Topic: TBA

    Abstract: TBA.




  • Thursday, March 2, 2023, 9:30AM (New York, NY time)

    TBA, TBA

    Topic: TBA

    Abstract: TBA.




  • Thursday, March 9, 2023, 9:30AM (New York, NY time)

    TBA, TBA

    Topic: TBA

    Abstract: TBA.




  • Thursday, March 16, 2023, 9:30AM (New York, NY time)

    Yanir Rubinstein, University of Maryland, MD

    Topic: TBA

    Abstract: TBA.




  • Thursday, March 23, 2023, 9:30AM (New York, NY time)

    Michael Roysdon, Tel Aviv University, Israel

    Topic: TBA

    Abstract: TBA.




  • Thursday, March 30, 2023, 9:30AM (New York, NY time)

    Elisabeth Werner, Case Western Reserve University, Cleveland, OH

    Topic: TBA

    Abstract: TBA.




  • Thursday, April 6, 2023, 9:30AM (New York, NY time)

    Grigoris Paouris, Texas A&M, College Station, TX, USA

    Topic: TBA

    Abstract: TBA.




  • Thursday, April 13, 2023, 9:30AM (New York, NY time)

    Orli Herscovici, Georgia Institute of Technology, Atlanta, GA

    Topic: TBA

    Abstract: TBA.




  • Thursday, April 20, 2023, 9:30AM (New York, NY time)

    Apostolos Giannopoulos, National Technical University of Athens, Greece

    Topic: Threshold for the expected measure of random polytopes

    Abstract: TBA.








    Organizers: