CMSA GENERAL RELATIVITY SEMINAR
November 6, 2019 10:30 amAfter reviewing the definition of intrinsic flat convergence, I will present open problems on the almost rigidity or stability of classic rigidity theorems for manifolds with scalar curvature bounds and...
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DIFFERENTIAL GEOMETRY
November 5, 2019 4:15 pmThe Gauss curvature flow was introduced to model the shape of worn stones. It is a parabolic Monge-Ampere type flow for convex hypersurfaces, involving regularity issues for fully nonlinear equations...
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HARVARD-MIT ALGEBRAIC GEOMETRY
November 5, 2019 3:00 pmJoint with Moritz Kerz. We show a structure theorem on those loci which enables us to deduce several consequences, one of which being Hard Lefschetz in rank one in positive...
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GAUGE-TOPOLOGY-SYMPLECTIC
October 25, 2019 3:30 pmAbstract: I'll discuss a forthcoming paper studying families of G_2-instantons on S^7, focusing on those which are obtained by pulling back asd instantons on S^4 via the quaternionic Hopf fibration....
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THURSDAY SEMINAR
October 24, 2019 3:00 pmGAUGE-TOPOLOGY-SYMPLECTIC
September 27, 2019 3:30 pmAbstract: Geometrically, PCA finds the k-dimensional subspace nearest a point cloud in m-dimensional Euclidean space. Numerically, PCA also specifies a basis for this subspace, the principal directions of the data....
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GAUGE-TOPOLOGY-SYMPLECTIC
September 20, 2019 3:30 pmAbstract: Let K be a null-homologous knot in a closed 3-manifold Y, and F be a Seifert surface. One can cap off the boundary of F with a disk in...
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