Organizers: Lei Chen, Daniel Cristofaro-Gardiner, Boyu Zhang
When: Mondays @ 3:00 - 4:00 pm
Where: Math 3206

Archives: F2012-S2013 F2013-S2014 F2014-S2015 F2015-S2016 F2016-S2017 F2017-S2018 F2018-S2019 F2019-S2020 F2020-S2021 F2021-S2022 F2022-S2023 

  • Sharp symplectic embeddings via integrable systems and ECH capacities

    Speaker: Brayan Ferreira (IAS) -

    When: Mon, September 12, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • A generalization of Geroch's conjecture

    Speaker: Florian Johne (Columbia) -

    When: Mon, September 19, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • Pleated surfaces in PSL_d(C)

    Speaker: Sara Maloni (Virginia) -

    When: Mon, October 3, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • Compact spaces of surface group representations in genus zero

    Speaker: Arnaud Maret (Heidelberg) -

    When: Mon, October 10, 2022 - 3:00pm
    Where: 3206
  • Higher dimensional examples of a smooth closing lemma

    Speaker: Shira Tanny (IAS) -

    When: Mon, October 17, 2022 - 3:00pm
    Where: Kirwan Hall 0411
  • Affine structures and the twisted cubic cone

    Speaker: Bill Goldman (UMD) -

    When: Mon, October 24, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • Transversal Hölder cohomology for flat Wieler solenoids

    Speaker: Rodrigo Trevino (UMD) -

    When: Mon, October 31, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • Counting closed curves in hyperbolic surfaces

    Speaker: Pouya Honaryar (Toronto) -

    When: Mon, November 7, 2022 - 3:00pm
    Where: https://umd.zoom.us/j/5665210745
  • Convergence of the gradient flow of renormalized volume

    Speaker: Frenco Pallette (Yale) -In this talk, we will study the gradient flow of renormalized volume with respect to the Weil-Peterson metric for (relatively) acylindrical convex cocompact hyperbolic 3-manifolds. We will see how, given any starting metric, the flow converges towards the metric M_geod with totally geodesic convex core boundary. This is based on joint work with Martin Bridgeman and Ken Bromberg.

    When: Mon, November 21, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • Title: Constructing proper affine actions via higher strip deformations

    Speaker: Neza Korenjak (UT Austin) - Abstract: Free groups are negatively curved, but they still admit properly discontinuous actions on affine space, which is flat. This allows us to utilize hyperbolic geometry to study affine actions. In this talk, we will generalize an approach of Danciger-Gueritaud-Kassel for constructing proper affine actions in three dimensions. We use a hyperbolic surface to construct higher strip deformations, which can be used to define proper actions of Fuchsian free groups on affine (4n-1)-space for any n.

    When: Mon, December 5, 2022 - 2:00pm
    Where: Kirwan Hall 1308
  • Eigenvalue asymmetry for convex real projective surfaces

    Speaker: Jeff Danciger (UT Austin) -abstract: A convex real projective surface is one obtained as the quotient of a properly convex open set in the projective plane by a discrete subgroup of SL(3,R), called the holonomy group, that preserves this convex set. The most basic examples are hyperbolic surfaces, for which the convex set is an ellipse, and the holonomy group is conjugate into SO(2,1). In this case, the eigenvalues of elements of the holonomy group are symmetric. More generally, the asymmetry of the eigenvalues of the holonomy group is a natural measure of how far a convex real projective surface is from being hyperbolic. We study the problem of determining which elements (and more generally geodesic currents) may have maximal eigenvalue asymmetry. We will present some limited initial results that we hope may be suggestive of a bigger picture. Joint work with Florian Stecker.

    When: Mon, December 5, 2022 - 3:00pm
    Where: Kirwan Hall 3206
  • TBA

    Speaker: David Futer (Temple) -

    When: Mon, January 30, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • Title: Mazur and Jester 4-manifolds

    Speaker: Jack Calcut (Oberlin U) -

    When: Mon, February 6, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • TBA

    Speaker: Shaoyun Bai (Simons Center for Geometry and Physics) - https://web.math.princeton.edu/~shaoyunb/

    When: Mon, February 20, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • TBA

    Speaker: Peter Smillie (Mathematical Institute, Heidelberg University) - https://www.mathi.uni-heidelberg.de/~psmillie/

    When: Mon, February 27, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • higher complex structures

    Speaker: Alexander Thomas (Heidelberg) -

    When: Mon, March 6, 2023 - 2:00am
    Where: Kirwan Hall 1311
  • TBA

    Speaker: Yusheng Luo (Stony Brook) -

    When: Mon, March 6, 2023 - 3:00pm
    Where: Zoom
  • TBA

    Speaker: Jean Mutanguha (Princeton) -

    When: Mon, March 13, 2023 - 3:00am
    Where: Kirwan Hall 3206
  • TBA

    Speaker: Ravi Shankar () -

    When: Mon, March 27, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • TBA

    Speaker: Amitesh Datta (Princeton University) - https://amiteshdatta.wixsite.com/amitesh-datta/

    When: Mon, April 3, 2023 - 3:00pm
    Where: Kirwan Hall 3206
  • TBA

    Speaker: Dan Margalit (Gatech) -

    When: Mon, May 1, 2023 - 3:00pm
    Where: Kirwan Hall 3206