Analysis and PDE seminar
Monday, 8th Jan, 4 pm—5 pm

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Venue: Ramanujan Hall

Host: Saikat Majumdar

Speaker: Anusha Krishan, University of Münster

Title: Toral symmetries of homogeneous ancient Ricci flows

Abstract: Ricci flow solutions that are defined for all negative times, are called ancient, and have a special significance since they arise as blowup limits at singularities of the flow. Several instances in the literature suggest that ancient solutions to the Ricci flow have a higher degree of symmetry than initially assumed. In recent work (joint with F. Pediconi and S. Sbiti), we show that under certain assumptions, collapsed homogeneous ancient solutions to the Ricci flow have additional toral symmetry.