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Existence of free boundary minimal surfaces in spherical and hyperbolic balls

Establish that every geodesic ball in the hemisphere S^3_+ and in hyperbolic space H^3 contains free boundary minimal surfaces realizing every orientable topological type.

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Background

By analogy with the Euclidean 3-ball, the authors expect analogous realization results in other space forms via appropriate eigenvalue optimization problems identified in recent work.

A proof would generalize the topological realization theorem beyond the Euclidean ball.

References

Any geodesic ball in \mathbb{S}3_+ or \mathbb{H}3 admits free boundary minimal surfaces of any prescribed orientable topology.

Embedded minimal surfaces in $\mathbb{S}^3$ and $\mathbb{B}^3$ via equivariant eigenvalue optimization (2402.13121 - Karpukhin et al., 20 Feb 2024) in Section 1.6 Free boundary minimal surfaces and the realization problem in other settings