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Daily Overview |
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Gvp1: Geometric variational problems Location: A704 Session Chair: Fabian Rupp Session Chair: Christian Scharrer | |
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The Willmore Energy Landscape of Spheres Technische Universität Darmstadt, Germany A geometric energy landscape is usually investigated locally through its critical points and their Morse indices. Understanding its global structure is challenging and requires both analytic and topological approaches. We present a special case where such global analysis is feasible: the Willmore energy of immersed 2-spheres in $\mathbb{R}^3$ . We show that the subset of immersions with energy at most $12\pi$ consists of four path components. As a consequence, we obtain insight into the singular behavior of the Willmore flow and a relation between self-intersections and the Willmore energy beyond the Li-Yau inequality. To prove these results, we glue together different instances of the Willmore flow and devise an invariant for triple-point-free immersed spheres. | |
