The universal extremal-length constant conjecture for Liouville currents

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Let Σ\Sigma be a hyperbolic surface, let LΣ\mathcal{L}_{\Sigma} be its Liouville current, and let EL⁡Σ\operatorname{EL}_{\Sigma} denote the continuous extension of extremal length to geodesic currents. Universal extremal-length constant conjecture. There is a universal constant CC such that

EL⁡Σ(LΣ)=CArea⁡(Σ).\operatorname{EL}_{\Sigma}(\mathcal{L}_{\Sigma})=C\operatorname{Area}(\Sigma).

This proposes a universal proportionality between the extremal length of the Liouville current and the hyperbolic area of the surface. The supplied text gives no resolution, so the conjecture remains open.

References

Primary source

Dídac Martínez-Granado and Dylan P. Thurston, “From curves to currents”, arXiv:2004.01550 (2024).

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