The index and finiteness conjecture for embedded minimal surfaces in the three-sphere
Let , and let be a closed embedded minimal surface of genus . Denote its Morse index by , and let be the Lawson surface of genus . For , consider the closed embedded minimal surfaces in the round three-sphere with index at most . The index and finiteness conjecture. The index satisfies
with equality if and only if is congruent to the Lawson surface . Moreover, for any given , the number of such surfaces is bounded above independently of . This would generalize Urbano's result to arbitrary genus; the proposed lower bound is substantially stronger than the best currently known lower bound, and the conjecture is motivated by index computations for minimal surface doublings.
References
Primary source
Nikolaos Kapouleas and Jiahua Zou, “Index and nullity of minimal surface doublings, I”, arXiv:2512.07734 (2025).
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