Two-ended odd-genus self-shrinker conjecture

For sufficiently large nNn\in\mathbb{N}, consider a complete, embedded, noncompact self-shrinker ΦgR3\Phi_g\subset\mathbb{R}^3 for mean curvature flow, where g=2n1g=2n-1 denotes its genus and the surface is invariant under the dihedral group Dn\mathbb{D}_n. Two-ended odd-genus self-shrinker conjecture. For each sufficiently large nNn\in\mathbb{N}, there exists such a Φg\Phi_g with two asymptotically conical ends, and these surfaces converge locally to the union of the self-shrinking cylinder and the sphere as nn\to\infty. The conjecture is motivated by numerical examples with odd genus and two asymptotically conical ends; it proposes a desingularisation of a self-shrinking cylinder and sphere, and remains open.

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Primary source

Reto Buzano, Huy The Nguyen and Mario B. Schulz, “Noncompact self-shrinkers for mean curvature flow with arbitrary genus”, arXiv:2110.06027 (2024).

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