OpenAI reports the cubic three-torus isoperimetric profile

In the unit cubic flat three-torus, every volume-minimizing region is a ball, a circular tube about a shortest closed geodesic, a coordinate slab or the complement of one of these, in the predicted volume ranges, including both types at the transition volumes 4π/81 and 1/π.

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Understanding the problem

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In the unit cubic flat three-torus, every volume-minimizing region is a ball, a circular tube about a shortest closed geodesic, a coordinate slab or the complement of one of these, in the predicted volume ranges, including both types at the transition volumes 4π/81 and 1/π.

Why it matters

If correct, determines the complete isoperimetric profile and classifies all minimizers of the cubic flat three-torus.

What counts as progress

Which regions minimize perimeter at each volume in the cubic flat three-torus?

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