Events
Geometry and Topology Seminar
- Events
- Geometry and Topology Seminar
Geometry and Topology Seminar: Ao Sun, Lehigh University, Interpolation method in mean curvature flow
ZoomThe interpolation method is a very powerful tool to construct special solutions in geometric analysis. I will present two applications in mean curvature flow: one is constructing a new genus…
Geometry and Topology: Peter McGrath, NC State, New Minimal Surfaces in B^3
SAS 4201A fundamental question in Differential Geometry which has spurred much recent work is whether every orientable compact surface with boundary can be minimally embedded in the Euclidean 3-ball with free…
Geometry and Topology Seminar: Antti Kykkänen, University of Jyväskylä, Finland, Geometry of gas giant planets and inverse problems
SAS 3282In this talk, I will introduce a novel Riemannian geometric model for wave propagation in gas giant planets. Terrestrial planets and gas giants have one key difference: in gas, density…
Geometry and Topology Seminar: Tony Liimatainen, University of Helsinki, Finland, Geometric inverse problems and inverse problems for the minimal surface equation
ZoomWe start by giving a short introduction to geometric inverse problems. Then we present our recent results regarding inverse problems for the minimal surface equation. Minimal surfaces are solutions to…
Geometry and Topology Seminar: Peter J. Olver, University of Minnesota, Structure and Generators of Differential Invariant Algebras
SAS 1216The structure of algebras of differential invariants, particularly their generators, is based on the symbolic invariant calculus provided by the method of equivariant moving frames. I will discuss a new…
Geometry and Topology Seminar: Adam Lowrance, Vassar College, The average value of invariants of 2-bridge knots.
ZoomWe show how to use continued fraction representations of 2-bridge knots to compute the average value of different invariants of the set of 2-bridge knots with fixed crossing number c.…
Geometry and Topology Seminar: Thomas Wears, Longwood University, The Ricci Flow on Three-Dimensional Metric Lie Algebras
SAS 4201A metric Lie algebra is a real Lie Algebra with an inner product. In this talk, we will outline a complete classification of all three-dimensional metric Lie algebras up to…
Geometry and Topology Seminar: Salem Selim, UC Irvine, Partial data inverse problems for magnetic Schrödinger operators with potentials of low regularity.
SAS 4201In this talk we discuss partial data inverse boundary problems for magnetic Schrödinger operators on bounded domains in the Euclidean space as well as some Riemannian manifolds with boundary. In…
Geometry and Topology Seminar: Davi Maximo, University of Pennsylvania, Rigidity and flexibility of scalar curvature
SAS 4201In this talk, I will go through some old and new results concerning the rigidity and flexibility of scalar curvature.
Geometry and Topology Seminar: Tye Lidman, NC State, Cosmetic surgeries and gauge theory
SAS 4201The famous knot complement theorem of Gordon and Luecke states that two knots in the three-sphere are equivalent if and only if the complements are homeomorphic. This was proved more…
Geometry and Topology Seminar: Irina Kogan, NC State, An Introduction to Computational Invariant Theory (Part I)
SAS 4201Invariants withstand transformations and, therefore, represent the essence of objects or phenomena. In mathematics, transformations often constitute a group action. Since the 19th century, studying the structure of various types…
Geometry and Topology Seminar: Irina Kogan, NC State, An Introduction to Computational Invariant Theory (Part II)
SAS 4201Invariants withstand transformations and, therefore, represent the essence of objects or phenomena. In mathematics, transformations often constitute a group action. Since the 19th century, studying the structure of various types…