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Free boundary minimal disks in convex balls

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arxiv 2307.01828 v1 pith:CUTWIJPS submitted 2023-07-04 math.DG math.APmath.GT

classification math.DGmath.APmath.GT
keywords convexdisksfree-boundarygenericleastminimaltheoryapproach
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In this paper, we prove that every strictly convex 3-ball with nonnegative Ricci-curvature contains at least 3 embedded free-boundary minimal 2-disks for any generic metric, and at least 2 solutions even without genericity assumption. Our approach combines ideas from mean curvature flow, min-max theory and degree theory. We also establish the existence of smooth free-boundary mean-convex foliations. In stark contrast to our prior work in the closed setting, the present result is sharp for generic metrics.

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  1. Minimal surfaces with arbitrary genus in 3-spheres of positive Ricci curvature

    math.DG 2025-08 conditional novelty 7.0 of 10

    Every positively curved Riemannian 3-sphere contains an embedded genus-g minimal surface of area at most 2 sigma_1 for every g.

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