All Events

from Tuesday
December 11, 2018 to Monday
December 31, 2018
 Show events for: All Events AGNES Algebraic geometry seminar Algebraic models in geometry seminar Am.Math.Soc. (AMS) Chapter Seminar Analysis Seminar Analysis Student Seminar Capsule Research Talks Colloquium Commencement Ceremony Comprehensive Exams Dynamical Systems Seminar Equivalence Method and Exterior Differential Systems Seminar First and Second Year Student Seminar Friday Summer Meeting Geometric Analysis Learning Seminar Geometry/Topology Seminar Grad / Postdoc Professional Development Seminar Graduate Student Seminar Graduate Topology Seminar Grant Proposal Panel Hodge Theory, Moduli and Representation Theory Holiday Party Joint Columbia-CUNY-Stony Brook General Relativity Seminar Math and Art Symposium for Tony Phillips Math Club Math Day 2016 Math in Jeans Mathematical Writing Seminar Mathematics Department Gathering Mathematics Education Colloquium Mathematics Summer Camp Mini Course / Dynamics Learning Seminar Mini-School in Geometry Minicourse in Real Enumerative Geometry New Graduate Students NY General Relativity Seminar Postdoc Geometry/Dynamics Seminar Postdoc Seminar Representation Theory Student Seminar RTG Colloquium RTG Seminar RTG Student Geometry Seminar SCGP Seminars Seminar in Topology and Symplectic Geometry Seminar on algebraic structures in physics Simons Colloquium Simons Lectures Series Singular metrics and direct images Special Algebra / Algebraic Geometry Seminar Special Analysis Seminar Special Colloquium Special Dynamics Seminar Special Geometry/Topology Seminar Special Lectures Special Seminar in Algebraic Geometry Special Topology Seminar Student Algebraic Geometry Seminar Student Differential Geometry Seminar Student Gauge Theory Seminar Student Seminar on Differential Geometry and Analysis Summer Workshop in Topology and Geometry Symplectic Geometry Reading Seminar Symplectic Geometry Seminar Thesis Defense Topology and Symplectic Geometry / Math of Gauge Fields seminar Women in Mathematics Instructions for subscribing to Stony Brook Math Department Calendars

 Month Agenda

 WednesdayDecember 12, 20184:00 PM Math Tower 5-127 Analysis Student SeminarJae Ho Cho, Stony Brook University SLE: Transition from simple curves to non-simple curvesTo finish up the semester, we discuss the proof that SLE$(\kappa)$ transitions from being a simple curve to a nonsimple curve when $\kappa = 4$.

 WednesdayDecember 12, 20184:00 PM - 5:30 PM Math Tower P-131 Algebraic geometry seminarBhargav Bhatt, University of Michigan Etale cohomology of affinoid spacesThis talk has two distinct but related parts. First, I will discuss a new Grothendieck topology (the arc topology) on the category of schemes and its usefulness in addressing some foundational questions in etale cohomology (including excision as well as new proofs of the Fujiwara-Gabber theorem and some results of Huber). Secondly, I will explain how to prove the analog of the Artin vanishing theorem in rigid analytic geometry. (Joint work with Akhil Mathew.)

 WednesdayDecember 12, 20182:30 PM - 3:30 PM Math Tower P-131 ColloquiumManuel Rivera, University of Miami A new point in topologyOne knows in algebraic topology the homotopical properties of geometric spaces can be recast into the language of infinite dimensional topological groups determined by function spaces of closed loops in the geometric spaces. For example the zeroth homology of the function space of based loops can be naturally identified with the group algebra of the fundamental group of the geometric space. This group algebra has a compatible coproduct determined by saying the group elements are group-like for the coproduct. Conversely the group like elements in this coalgebra form a group equivalent to the given one. The new point in topology says this bialgebra determining the fundamental group and higher dimensional aspects can, in complete generality, be determined directly from algebraic structure on geometric chains in the geometric space itself. The algebraic construction that does this produces a free differential algebra from a differential coalgebra and was introduced sixty years ago for simply connected spaces. Remarkably it is understood only now to work fine for all geometric spaces if one adds something to it. The new idea beyond technique is to combine the algebraic construction from the past with the infinite homotopical symmetry of chain approximations to the diagonal mapping of the geometric space which is itself perfectly symmetrical. This makes the chain co-algebra on the geometric space cocommutative in a derived sense so that the construction from the past becomes enriched to a bi-algebra in a derived sense. One now sees the fundamental group in the zeroth homology of the enhanced algebraic construction and furthermore one sees higher dimensional homotopical information about the geometric space in the homotopy type of the enhanced algebraic construction.

 ThursdayDecember 13, 20182:15 PM - 3:15 PM MATH 5-127 Symplectic Geometry SeminarChris Woodward, Rutgers Invariance of immersed Floer cohomology under Lagrangian surgeryThis is a joint work with Joseph Palmer, and uses heavily earlier the chapter of Fukaya-Oh-Ohta-Ono on the behavior of holomorphic disks under surgery. The motivation is a larger project, partly joint with Sushmita Venogopalan, to prove a Harder-Narasimhan filtration for the Fukaya category under Kahler-Ricci flow (KRF): For any KRF surgery, some copies of the Fukaya category of the center of the surgery embed in the pre-surgery Fukaya category and the quotient is the post-surgery Fukaya category. In order to carry this out, one has to understand how immersed Floer cohomology behaves under combined KRF/mean curvature flow. One of the bad things that can happen is that the bounding cochain can hit a "wall" where the q-valuation of one of the coefficients becomes zero. We show that one can continue past the wall by using a Polterovich surgery, so that the Floer cohomology is isomorphic. Some previous cases of this were known by work of Pascaleff--Tonkonog, Dimitroglou-Rizell--Ekholm--Tonkonog, and Hong-Kim-Lau.

 ThursdayDecember 13, 20184:00 PM - 5:00 PM Math Tower P-131 ColloquiumBhargav Bhatt, University of Michigan Interpolating p-adic cohomology theoriesIntegration of differential forms against cycles on a complex manifold helps relate de Rham cohomology to singular cohomology, which forms the beginning of Hodge theory. The analogous story for p-adic manifolds, which is the subject of p-adic Hodge theory, is richer due to a wider variety of available cohomology theories (de Rham, etale, crystalline, and more) and torsion phenomena. In this talk, I will give a bird's eye view of this picture, guided by the recently discovered notion of prismatic cohomology that provides some cohesion to the story. (Based on joint work with Morrow and Scholze as well as work in progress with Scholze.)

 ThursdayDecember 13, 20181:00 PM - 2:15 PM Math Tower 5-127 Seminar in Topology and Symplectic GeometryLev Tovstopyat-Nelip, Boston College The transverse invariant and braid dynamicsLet K be a link braided about an open book (B,p) supporting a contact manifold (Y,x). K and B are naturally transverse links. We prove that the hat version of the transverse link invariant defined by Baldwin, Vela-Vick and Vertesi is non-zero for the union of K with B. As an application, we prove that the invariant of a transverse braid having fractional Dehn twist coefficient greater than one is non-zero. We discuss geometric consequences and future directions.

 Show events for: All Events AGNES Algebraic geometry seminar Algebraic models in geometry seminar Am.Math.Soc. (AMS) Chapter Seminar Analysis Seminar Analysis Student Seminar Capsule Research Talks Colloquium Commencement Ceremony Comprehensive Exams Dynamical Systems Seminar Equivalence Method and Exterior Differential Systems Seminar First and Second Year Student Seminar Friday Summer Meeting Geometric Analysis Learning Seminar Geometry/Topology Seminar Grad / Postdoc Professional Development Seminar Graduate Student Seminar Graduate Topology Seminar Grant Proposal Panel Hodge Theory, Moduli and Representation Theory Holiday Party Joint Columbia-CUNY-Stony Brook General Relativity Seminar Math and Art Symposium for Tony Phillips Math Club Math Day 2016 Math in Jeans Mathematical Writing Seminar Mathematics Department Gathering Mathematics Education Colloquium Mathematics Summer Camp Mini Course / Dynamics Learning Seminar Mini-School in Geometry Minicourse in Real Enumerative Geometry New Graduate Students NY General Relativity Seminar Postdoc Geometry/Dynamics Seminar Postdoc Seminar Representation Theory Student Seminar RTG Colloquium RTG Seminar RTG Student Geometry Seminar SCGP Seminars Seminar in Topology and Symplectic Geometry Seminar on algebraic structures in physics Simons Colloquium Simons Lectures Series Singular metrics and direct images Special Algebra / Algebraic Geometry Seminar Special Analysis Seminar Special Colloquium Special Dynamics Seminar Special Geometry/Topology Seminar Special Lectures Special Seminar in Algebraic Geometry Special Topology Seminar Student Algebraic Geometry Seminar Student Differential Geometry Seminar Student Gauge Theory Seminar Student Seminar on Differential Geometry and Analysis Summer Workshop in Topology and Geometry Symplectic Geometry Reading Seminar Symplectic Geometry Seminar Thesis Defense Topology and Symplectic Geometry / Math of Gauge Fields seminar Women in Mathematics Instructions for subscribing to Stony Brook Math Department Calendars