Thursday February 22, 2018 4:00 PM  5:00 PM Math Tower P131
 Colloquium Nets Katz, Caltech
Semialgebraic sets and the Kakeya ProblemIn joint work with Keith Rogers, we study the connection between the Kakeya problem and the highlights of the theory of semialgebraic sets such as Tarski's projection theorem and Gromov's algebraic lemma.

Thursday February 22, 2018 1:00 PM Math Tower 5127
 Symplectic Geometry Seminar Yuhan Sun, Stony Brook University
Finding nondisplaceable Lagrangian tori via toric degeneration.Starting with a semiFano toric surface, I will explain how to find families of Lagrangian tori with nontrivial deformed Floer cohomology. The proof uses toric degeneration method to compute the potential functions of these tori.

Friday February 23, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Zhiqiang Li, Stony Brook University
Prime orbit theorems for expanding Thurston mapsAnalogues of the Riemann zeta function were first introduced into geometry by A. Selberg and into dynamics by M. Artin, B. Mazur, and S. Smale. Analytic studies of such dynamical zeta functions yield quantitative information on the distribution of closed geodesics and periodic orbits.
We obtain the first Prime Orbit Theorem, as an analogue of the Prime Number Theorem, in complex dynamics outside of hyperbolic maps, for a class of branched covering maps on the $2$sphere called expanding Thurston maps $f$. More precisely, we show that the number of primitive periodic orbits of $f$, ordered by a weight on each point induced by a nonconstant realvalued Hölder continuous function on $S^2$ satisfying some additional regularity conditions, is asymptotically the same as the wellknown logarithmic integral, with an exponentially small error term. Such a result follows from our quantitative study of the holomorphic extension properties of the associated dynamical zeta functions and dynamical Dirichlet series.
In particular, the above result applies to postcriticallyfinite rational maps whose Julia set is the whole Riemann sphere. Moreover, we prove that the regularity conditions needed here are generic; and for a Lattès map $f$, a continuously differentiable function satisfies such a condition if and only if it is not cohomologous to a constant. This is a joint work with T. Zheng.

Friday February 23, 2018 2:30 PM  3:30 PM Math Tower 5127
 Student Algebraic Geometry Seminar Sasha Victorova, Stony Brook University
Canonical models, minimal models and their singularitiesIn this talk we will run with the definitions of canonical and terminal singularities from last week and use them to give definitions of canonical and minimal models of (quasi)projective varieties. As usual we will turn to examples to motivate the main ideas.

Friday February 23, 2018 4:00 PM  6:00 PM P131 Math Tower
 Geometric Analysis Learning Seminar Marlon De Oliveira Gomes, Stony Brook University
Scalar curvature as a moment mapIn this talk, I will begin by briefly describing what was know about the existence problem for cscK metric prior to Donaldson's work. I will then move on to discuss the KempfNess theorem in the finitedimensional setting, and how the concepts involved can be understood in the cscK case, by describing the formulation of scalar curvature as a moment map. Time permitting, I will also describe the (conjectural) associated algebraic notion of stablity (Kstability) in the case of polarized algebraic varietes, and recent developments in the subject.

Wednesday February 28, 2018 2:30 PM  3:30 PM Math Tower P131
 Mini Course / Dynamics Learning Seminar Babak Modami, Stony Brook University
Minimal nonuniquely ergodic foliations on surfaces: IIMeasured foliations (laminations) on surfaces are wellknown examples of dynamical systems in low dimension. The first return maps of measured foliations are interval exchange transformations which have been studied extensively. Measured foliations also determine the trajectories of Teichmüller and WeilPetersson geodesics in the Teichmüller space.
In this minicourse, I outline my joint work with Brock, Leininger and Rafi about construction of minimal nonuniquely ergodic laminations. This work was inspired by a construction of Gabai and the earlier work of LenzhenLeiningerRafi where laminations are realized as the limits of sequences of curves on surfaces. An advantage of our method is explicit estimates for intersection numbers of the curves in sequences and the associated subsurface coefficients. These estimates are crucial to control the behavior of geodesics and determine their limit sets in the Thurston compactification of Teichmüller space (which won't be discussed in the minicourse).

Wednesday February 28, 2018 4:00 PM Math Tower 5127
 Analysis Student Seminar Silvia Ghinassi, Stony Brook University
Dimension Results for Brownian MotionTBA

Wednesday February 28, 2018 1:00 PM  2:00 PM Math Tower P131
 Graduate Student Seminar JeanFrancois Arbour, Stony Brook University
TBATBA

Thursday March 01, 2018 2:30 PM  03:30 AM P131
 Analysis Seminar Ewain Gwynne, MIT
TBATBA

Thursday March 01, 2018 4:00 PM  5:00 PM Math Tower P131
 Colloquium Dzmitry Dudko,
TBA

Friday March 02, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Serge Troubetzkoy, Institut de Mathématiques de Marseille
TBATBA

Wednesday March 07, 2018 1:00 PM  2:00 PM Math Tower P131
 Graduate Student Seminar Hang Yuan, Stony Brook University
TBATBA

Wednesday March 07, 2018 4:00 PM  5:30 PM Math Tower P131
 Algebraic geometry seminar Ariyan Javanpeykar, Mainz/Columbia
Arithmetic, algebraic, and analytic hyperbolicityIn the first part of this talk we will discuss different notions of hyperbolicity for algebraic varieties which are conjecturally related by conjectures of
GreenGriffiths, Lang, and Vojta. Then, we introduce an "analytic" notion of hyperbolicity, which interpolates between being Brody hyperbolic and
hyperbolically embedabble. I hope to give a survey of several known results in the first part. In the second part I will focus on arithmetic questions. For instance, Scholl proved that the
moduli of del Pezzo surfaces is arithmetically hyperbolic. In joint work with Daniel Loughran, we investigate the analogous question for Fano threefolds. For instance, we show that the
moduli of Fano threefolds is not arithmetically hyperbolic, by (explicitly) constructing an abelian surface which sits inside this moduli.

Thursday March 08, 2018 4:00 PM  5:00 PM Math Tower P131
 Colloquium Richard Melrose, MIT
TBATBA

Thursday March 08, 2018 2:30 PM P131
 Analysis Seminar Harrison Pugh, Stony Brook University
TBA

Friday March 09, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Vadim Kaimanovich, University of Ottawa
TBATBA

Wednesday March 21, 2018 4:00 PM  5:30 PM Math Tower P131
 Algebraic geometry seminar Cristian Minoccheri, Stony Brook University
TBATBA

Friday March 23, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Juan RiveraLetelier, University of Rochester
TBATBA

Tuesday April 03, 2018 4:00 PM  5:30 PM Math Tower P131
 Geometry/Topology Seminar Roubing Zhang, Stony Brook University
TBATBA

Thursday April 12, 2018 4:00 PM  5:00 PM SCGP102
 Colloquium TBA, TBA
Categorification in mathematical physics workshop ColloquiumTBA

Friday April 13, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Anand P. Singh, Central University of Rajasthan
TBATBA

Tuesday April 17, 2018 4:00 PM  5:30 PM Math Tower P131
 Geometry/Topology Seminar John Alex Cruz Morales, Universidad Nacional. Colombia, South America
Quantum cohomology of Grassmannians and Lefschetz exceptional collections.

Thursday April 19, 2018 4:00 PM  5:00 PM Math Tower P131
 Colloquium Percy Deift, NYU Courant
TBATBA

Friday April 20, 2018 11:00 PM P131
 Analysis Seminar Evita Nestoridi, Princeton University
TBATBA

Thursday April 26, 2018 4:00 PM  5:00 PM Math Tower P131
 Colloquium Mohammed Abouzaid, Columbia University
TBATBA

Friday April 27, 2018 2:30 PM  3:30 PM Math Tower P131
 Dynamical Systems Seminar Romain Dujardin, Université Pierre et Marie Curie
TBATBA

