Differential systolic inequality for embedded one-holed tori

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Let K⊂RNK\subset {\mathbb{R}}^N be an embedded torus with one boundary component, and suppose that ∂K\partial K is a unit circle. A closed curve in KK is non-null-homotopic if it is not null-homotopic in KK. Differential systolic inequality. There is a non-null-homotopic closed curve in KK of length ℓ\ell satisfying

ℓ2≲area⁡K−π.\ell^2\lesssim \operatorname{area} K-\pi.

This inequality is proposed in response to a possible counterexample to the quadratic pants decomposition conjecture obtained by iteratively adding scaled copies of a one-holed torus to a cube. The implicit constant is not stated to depend on the genus and the conjecture is presented as an open potential remedy for that construction.

References

Primary source

Robert Young, “Quantitative nonorientability of embedded cycles”, arXiv:1312.0966 (2016).

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