All Events

from Wednesday
November 21, 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

 MondayNovember 26, 20184:15 PM - 5:15 PM 5-127 Student Differential Geometry SeminarZhongshan An, Stony Brook University Moduli and convergence theory of Einstein metricsTBA

 TuesdayNovember 27, 20184:00 PM - 5:00 PM Math Tower P-131 ColloquiumTheodore Drivas, Princeton University TBA

 WednesdayNovember 28, 20184:00 PM Math Tower 5-127 Analysis Student SeminarJessica Maghakian, Stony Brook University Ito's Formula and Stochastic Differential EquationsWe state and prove Ito's formula and define Stochastic differential equations and state an existence/uniqueness result for them.

 WednesdayNovember 28, 20184:00 PM - 5:30 PM Math Tower P-131 Algebraic geometry seminarJason Starr, Stony Brook University Symplectic Invariance of Rational Surfaces on Kaehler ManifoldsGromov-Witten invariants are manifestly symplectically invariant and count holomorphic curves of given genus and homology class satisfying specified incidence conditions. The corresponding differential equations for holomorphic *surfaces* are not well-behaved and do not give invariants. Nonetheless, I will explain how the symplectically invariant Gromov-Witten theory can produce covering families of rational surfaces in Kaehler manifolds, e.g., every Kaehler manifold symplectically deformation invariant to a projective homogeneous space has a covering family of rational surfaces. The key input is a positive curvature result for spaces of stable maps proved jointly with de Jong.

 WednesdayNovember 28, 20182:30 PM - 3:30 PM Math Tower P-131 Mini Course / Dynamics Learning SeminarDimitrios Ntalampekos, Stony Brook University Non-removability of the Sierpinski gasket (part II)I will sketch a proof that the Sierpinski gasket is non-removable for quasiconformal maps. The first step of the argument is the construction of a non-Euclidean sphere, called a "flap-plane", that arises by attaching infinitely many rectangles to the Euclidean plane. The second step of the construction is to embed quasisymmetrically this flap-plane back to the Euclidean plane, by using the Bonk-Kleiner uniformization theorem. I will provide some details of these arguments, and discuss the properties of the "flap-planes", as well as possible generalizations.

 ThursdayNovember 29, 20184:00 PM - 5:00 PM Math Tower P-131 ColloquiumKristen Hendricks, MSU TBA

 ThursdayNovember 29, 20181:00 PM - 2:15 PM Math Tower 5-127 Seminar in Topology and Symplectic GeometryYoosik Kim, Boston University Immersed two-spheres and SYZ of GrassmanniansSYZ mirror symmetry has provided a geometry way to understand mirror symmetry via duality of a Lagrangian torus fibration. In this talk, we discuss how to deal with the most generic singular SYZ fiber, an immersed sphere. Using Floer-theoretical machinery, we complete the SYZ mirror constructed from a smooth torus. As an application, we discuss how to construct Rietsch’s Lie-theoretical mirror of Grassmannians of two planes by using Floer theory. This is based on joint work with Hansol Hong and Siu-Cheong Lau.

 FridayNovember 30, 20182:30 PM - 3:30 PM Math Tower P-131 Dynamical Systems SeminarChristopher J. Leininger, University of Illinois at Urbana-Champaign Polygonal billiards, Liouville currents, and rigidityA particle bouncing around inside a Euclidean polygon gives rise to a biinfinite "bounce sequence" (or "cutting sequence") recording the (labeled) sides encountered by the particle. In this talk, I will describe recent work with Duchin, Erlandsson, and Sadanand, in which we prove that the set of all bounce sequences---the "bounce spectrum"---essentially determines the shape of the polygon. This is consequence of our main result about Liouville currents on surfaces associated to nonpositively curved Euclidean cone metrics. In the talk I will explain the objects mentioned above, how they relate to each other, and give some idea of the proof of the main theorem.

 FridayNovember 30, 20184:00 PM - 6:00 PM P-131 Math Tower Geometric Analysis Learning SeminarJiasheng Teh, Stony Brook University Deformation of Complex StructuresDeformation of Complex structures of Riemann surfaces was first considered by Riemann in his memoir on Abelian functions in 1857. However, the general theory for deformation of higher dimensional complex manifolds was established only much later by Kodaira and Spencer in the 1950s. In this talk, we present an overview for the basic notions and results in deformation theory. In particular, main ideas for proving the existence and completeness theorems will be given. We will end the talk with a discussion of Tian-Todorov unobstructedness theorem for Calabi-Yau manifolds.

 FridayNovember 30, 20181:00 PM - 2:30 PM Math Tower 5-127 Thesis DefenseEdward T. Bryden, Stony Brook University Stability of the positive mass theorem for axisymmetric manifoldsBased on the formulation of general relativity, our intuition leads us to expect a close relationship between the ADM mass of an asymptotically flat Riemannian manifold and its geometry. In their celebrated Positive Mass Theorem, Schoen and Yau proved that if an asymptotically flat manifold has non-negative scalar curvature, then the ADM mass is non-negative. They also proved that the only asymptotically flat Riemannian with non-negative scalar curvature and zero mass is Euclidean space, as one would suspect for physical reasons. It is natural to ask whether manifolds with small mass must be close to Euclidean space in some way. This question has been answered in the affirmative for a number of special cases of Riemannian manifolds. This thesis focuses on the collection of simply connected axisymmetric asymptotically flat manifolds. These manifolds are both flexible enough that they model a wide range of interesting physical situations, and restricted enough to have useful special properties. Namely, they have naturally defined and globally valid coordinate systems and a formula which expresses their ADM mass as an integral of non-negative quantities over the manifold. Furthermore, it is assumed that the manifolds under consideration satisfy one of two additional technical hypotheses. It is then shown that a small ADM mass implies that their metric coefficients are close to the metric coefficients of Euclidean space in cylindrical coordinates with respect to the Sobolev norm.

 WednesdayDecember 05, 20182:30 PM - 3:30 PM Math Tower P-131 Mini Course / Dynamics Learning SeminarKenneth Bromberg, University of Utah TBATBA

 WednesdayDecember 05, 20184:00 PM Math Tower 5-127 Analysis Student SeminarSilvia Ghinassi, Stony Brook University SLE: Definition and Basic PropertiesWe will define SLE two ways and discuss some of the basic properties it satisfies.

 WednesdayDecember 05, 20184:00 PM - 5:00 PM Math Tower P-131 Algebraic geometry seminarShizang Li, Columbia Universtiy \ An example of liftings with different Hodge numbersDoes a smooth proper variety in positive characteristic know the Hodge number of its liftings? The answer is ”of course not”. However, it’s not that easy to come up with a counter-example. In this talk, I will first introduce the background of this problem. Then I shall discuss some obvious constraints of constructing a counter-example. Lastly I will present such a counter-example and state a few questions of similar flavor for which I do not know an answer.

 ThursdayDecember 06, 20181:00 PM - 2:15 PM Math Tower 5-127 Seminar in Topology and Symplectic GeometryChris Woodward, Rutgers TBATBA

 FridayDecember 07, 201812:00 PM - 1:00 PM Math Tower P-131 Grad / Postdoc Professional Development SeminarElizabeth Russell, NSA A mathematician at the NSAElizabeth Russell graduated from Boston University in 2009, working under Bob Devaney. After graduating, she did a postdoc at the United States Military Academy (West Point) and then moved into a tenure-track position at Western New England University. After a year, she transitioned to the NSA where she has been for the past 5 years. Now she works in the Research Directorate as a member of the data science research group. During this talk, Liz will discuss employment opportunities for mathematicians and statisticians at the NSA and what it's like to work for the government doing secret math. She will also talk about the roundabout path she took getting here (including the day she decided to leave academia).

 FridayDecember 07, 20182:30 PM - 3:30 PM Math Tower P-131 Dynamical Systems SeminarZoran Sunic, Hofstra University TBATBA

 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 $\kappa = 4$.

 ThursdayDecember 13, 20184:00 PM - 5:00 PM P-131 ColloquiumBhargav Bhatt, University of Michigan. TBATBA

 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