Multiplicity-one conjecture for smooth fixed-topology min-max surfaces

Let gg be a Riemannian metric and let a min-max sequence from a sweepout of genus gg surfaces converge as a varifold to

i=1kniΓi,\sum_{i=1}^k n_i\Gamma_i,

where the pairwise disjoint, smooth, closed, embedded minimal surfaces Γi\Gamma_i have positive integer multiplicities nin_i. A minimal surface is two-sided when it has a globally defined normal direction. Multiplicity-one conjecture. In the setting of the multi-parameter min-max theorem, if the metric gg is bumpy, then ni=1n_i=1 for every two-sided Γi\Gamma_i. More generally, for any metric gg, every two-sided Γi\Gamma_i occurring with multiplicity ni>1n_i>1 is stable and has a non-trivial Jacobi field. Multiplicity one is known in related Almgren–Pitts settings through regularized area methods, but remains open here for smooth sweepouts of fixed topological type.

Sources & referencesView supporting material

Primary source

Daniel Ketover, “Flipping Heegaard splittings and minimal surfaces”, arXiv:2211.03745 (2022).

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