Local compactness conjecture for convex functionals on surfaces

Let SS be a surface, and let Convex(S)\operatorname{Convex}(S) denote the space of convex curve functionals on SS, equipped with the product topology inherited from its values on the curve set C(S)\mathcal{C}(S). Local compactness conjecture for Convex(S)\operatorname{Convex}(S). The set Convex(S)\operatorname{Convex}(S) with the product topology is locally compact. This is suggested by the local compactness of the corresponding set AConvex(S)\operatorname{AConvex}(S) of additive convex functionals and by the compact-convex-set model in train-track coordinates; the supplied text does not state that the conjecture has been resolved.

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Primary source

Dídac Martínez-Granado and Dylan P. Thurston, “The intersection dual of geodesic currents”, arXiv:2605.04031 (2026).

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