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Dynamical Black Hole Formation

DIFFERENTIAL GEOMETRY

February 18, 2020      4:15 pm
Speaker: Martin Lesourd - Harvard University, CMSA

In 2008, Christodoulou achieved a major breakthrough in the context of mathematical general relativity in being able to form trapped surfaces dynamically from initial data for the Einstein vacuum system....
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T-equivariant disc potentials of toric manifolds

DIFFERENTIAL GEOMETRY

February 11, 2020      4:15 pm
Speaker: Yoosik Kim - Brandeis University

In this talk, we discuss how to derive the equivariant SYZ mirror of toric manifolds by counting holomorphic discs. In the case of (semi-)Fano toric manifolds, those mirrors recover Givental's...
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**CANCELED** Probing homotopy 4-spheres using near-symplectic forms

DIFFERENTIAL GEOMETRY

February 4, 2020      4:15 pm
Speaker: **CANCELED** Chris Gerig - Harvard University

**CANCELED** Most 4-manifolds do not admit symplectic forms, but most admit 2-forms that are "nearly" symplectic. Just like the Seiberg-Witten (SW) invariants, there are Gromov invariants that are compatible with...
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On the SYZ Mirror Symmetry of Log Calabi-Yau Surfaces

DIFFERENTIAL GEOMETRY

November 12, 2019      4:15 pm
Speaker: Yu-Shen Lin - BU

The Strominger-Yau-Zaslow conjecture predicts the existence of special Lagrangians fibration in Calabi-Yau manifolds near large complex structure limit. The SYZ conjecture has been an important guiding principle for mirror symmetry...
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The Gauss curvature flow – the shape of worn stones

DIFFERENTIAL GEOMETRY

November 5, 2019      4:15 pm
Speaker: Kyeongsu Choi - MIT

The 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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