Online Asymptotic Geometric Analysis Seminar


Welcome to the Online AGA seminar webpage! 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 Tuesdays, the lectures start at:

7:30am in Los-Angeles, CA
8:30am in Edmonton, AB
9:30am in Columbia MO; College Station, TX; Chicago, IL
10:30am in Kent, OH; Atlanta, GA; Montreal; New York, NY
11:30am in Rio de Janeiro, Buenos Aires
3:30pm (15:30) in London
4:30pm (16:30) in Paris, Milan, Budapest, Vienna
5:30pm (17:30) in Tel Aviv.



Spring 2020: abstracts, slides, videos of the talks



Fall 2020: abstracts, slides, videos of the talks




Schedule Spring 2021:


  • Tuesday, January 5, 2021, 10:30AM (New York, NY time)

    Yuansi Chen, Duke University, Durham, NC, USA

    Topic: Recent progress on the KLS conjecture and the stochastic localization scheme of Eldan

    Abstract: Kannan, Lovasz and Simonovits (KLS) conjectured in 1993 that the Cheeger isoperimetric coefficient of any log-concave density is achieved by half-spaces up to a universal constant factor. This conjecture also implies other important conjectures such as Bourgain's slicing conjecture (1986) and the thin-shell conjecture (2003). In this talk, first we briefly survey the origin and the main consequences of these conjectures. Then we present the development and the refinement of the main proof technique, namely Eldan's stochastic localization scheme, which results in the current best bounds of the Cheeger isoperimetric coefficient in the KLS conjecture.

    Slides of the talk

    Video of the talk


  • Tuesday, January 12, 2021:

    No seminar. This winter school is happening at the time of the seminar.




  • Tuesday, January 19, 2021, 10:30AM (New York, NY time)

    Mark Agranovsky, Bar Ilan University, Ramat Gan, Israel

    Topic: On integrable domains and surfaces

    Abstract: Integrability of domains or surfaces in R^n is defined in terms of sectional or solid volume functions, evaluating the volumes of the intersections with affine planes or half-spaces. Study of relations between the geometry of domains and types of their volume functions is motivated by a problem of V.I. Arnold about algebraically integrable bodies, which in turn goes back to celebrated Newton's Lemma about ovals. The talk will be devoted to a survey of some recent works in this area.




  • Tuesday, January 26, 2021, 10:30AM (New York, NY time)

    Konstantin Drach, Aix-Marseille Universite, Marseille, France

    Topic: TBA

    Abstract: TBA




  • Tuesday, February 2, 2021, 11:30AM (New York, NY time) - Note the special time an hour later!

    Rachel Greenfeld, UCLA, Los-Angeles, CA, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, February 9, 2021, 10:30AM (New York, NY time)

    Alexey Garber, The University of Texas Rio Grande Valley, Brownsville, TX, USA

    Topic: Convex polytopes that tile space with translations: Voronoi domains and spectral sets

    Abstract: In this talk I am going to discuss convex d-dimensional polytopes that tile R^d with translations and their properties related to two conjectures. The first conjecture, the Fuglede conjecture, claims that every spectral set in R^d tiles the space with translations; this conjecture was recently settled for convex domains by Lev and Matolcsi. The second conjecture, the Voronoi conjecture, claims that every convex polytope that tiles R^d with translations is the Voronoi domain for some d-dimensional lattice. The conjecture originates from the Voronois geometric theory of positive definite quadratic forms and is related to many questions in mathematical crystallography including Hilberts 18th problem. I mostly plan to discuss recent progress in the Voronoi conjecture and the proof of the conjecture for five-dimensional parallelohedra; in the general setting the Voronoi conjecture is still open. The talk is based on a joint work with Alexander Magazinov (Skoltech).




  • Tuesday, February 16, 2021, 10:30AM (New York, NY time)

    Han Huang, Georgia Institute of Technology, Atlanta, GA, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, February 23, 2021, 10:30AM (New York, NY time)

    Boaz Slomka, The Open University of Israel, Raanana, Israel

    Topic: TBA

    Abstract: TBA




  • Tuesday, March 2, 10:30AM (New York, NY time)

    Maria de los Angeles Alfonseca-Cubero, North Dakota State University, Fargo, ND, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, March 9, 2021, 10:30AM (New York, NY time)

    Tselil Schramm, Stanford University, Palo Alto, CA, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, March 16, 2021, 10:30AM (New York, NY time)

    No seminar: this conference intersects with the seminar time.

    Topic: TBA

    Abstract: TBA




  • Tuesday, March 23, 2021, 10:30AM (New York, NY time)

    No seminar: this conference intersects with the seminar time.

    Topic: TBA

    Abstract: TBA




  • Tuesday, March 30, 10:30AM (New York, NY time)

    Susanna Spektor, Sheridan College, Toronto, ON, Canada

    Topic: On the applications of the Khinchine type inequality for Independent and Dependent Poisson random variables.

    Abstract: We will obtain the Khinchine type inequality for Poisson random variables in two settings-when random variables are independent and when the sum of them is equal to a fixed number. We will look at the applications of these inequalities in Statistics..




  • Tuesday, April 6, 10:30AM (New York, NY time)

    Semyon Alesker, Tel Aviv University, Tel Aviv, Israel

    Topic: New inequalities for mixed volumes of convex bodies and valuations theory

    Abstract: I will present a few new inequalities for mixed volumes of general convex bodies. In a special case they can be considered as a new isoperimetric property of Euclidean ball in R^n. The inequalities are consequences of a recent result of J. Kotrbaty on Hodge-Riemann type inequalities on the space of translation invariant valuations on convex sets.




  • Tuesday, April 13, 2021, 10:30AM (New York, NY time)

    Vishesh Jain, Stanford University, Palo Alto, CA, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, April 20, 2021, 11:30AM (New York, NY time)

    Anindya De, University of Pennsilvania

    Topic: TBA

    Abstract: TBA




  • Tuesday, April 27, 2021, 10:30AM (New York, NY time)

    Ronen Eldan, Weizmann Institute of Science, Rehovot, Israel

    Topic: TBA

    Abstract: TBA




  • Tuesday, May 4, 2021, 10:30AM (New York, NY time)

    Gregory Wyatt, University of Missouri, Columbia, MO, USA (talk 1, 20 minutes)

    Topic: TBA

    Abstract: TBA



    Sudan Xing, University of Alberta, Canada (talk 2, 20 minutes)

    Topic: TBA

    Abstract: TBA




  • Tuesday, May 11, 2021, 10:30AM (New York, NY time)

    Sang Woo Ryoo, Princeton University, NJ, USA

    Topic: TBA

    Abstract: TBA




  • Tuesday, May 18, 2021, 10:30AM (New York, NY time)

    Maria Angeles Hernandez Cifre, Universidad de Murcia, Spain

    Topic: TBA

    Abstract: TBA




  • Tuesday, May 25, 2021, 11:30AM (New York, NY time)

    Alexander Litvak, University of Alberta, AB, Canada

    Topic: TBA

    Abstract: TBA




  • Tuesday, June 1, 2021, 10:30AM (New York, NY time)

    Almut Burchard, University of Toronto, Canada

    Topic: TBA

    Abstract: TBA




  • Tuesday, June 8, 2021, 10:30AM (New York, NY time)

    TBA, TBA

    Topic: TBA

    Abstract: TBA







    Organizers: