Non-homeomorphism conjecture for infinity harmonic maps

Let uu be a limit infinity harmonic map between hyperbolic surfaces, and let λ\lambda be the canonical geodesic lamination with image μ\mu. Non-homeomorphism conjecture. The limit infinity harmonic maps are not homeomorphisms; small regions around the canonical geodesic lamination are mapped onto λ\lambda, and in particular u1(μ)u^{-1}(\mu) often contains open sets. This is a qualitative conjecture about the structure of the limit maps and remains open.

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Primary source

Georgios Daskalopoulos and Karen Uhlenbeck, “Analytic properties of Stretch maps and geodesic laminations”, arXiv:2205.08250 (2025).

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