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The mass angular momentum inequality

Virtually

We show that either there is a counterexample to black hole uniqueness, in the form of a regular axisymmetric stationary vacuum spacetime with an asymptotically flat end and multiple degenerate […]

The Néron model of a Lagrangian fibration

Science Center 507 1 Oxford Street, Cambridge

Singular fibers in minimal elliptic fibrations were classified by Kodaira and Néron in the 1960s. In his proof, Néron constructed and systematically used a special group scheme acting on an […]

Blob homology

Science Center 507 1 Oxford Street, Cambridge

Presented by Sunghyuk Park (Harvard CMSA) Tuesday, Feb. 4, 2025 4:15–6:15 pm ET Science Center 507, 1 Oxford St., Cambridge MA