Quasiconformal universality conjecture for conformal-dimension-one limit sets

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Let KiK_i, for i{1,2}i\in\{1,2\}, be limit sets of hyperbolic conformal dynamical systems, such as limit sets of convex co-compact Kleinian groups or Julia sets of hyperbolic rational maps. Suppose that K1K_1 and K2K_2 have conformal dimension 11 and are homeomorphic. Quasiconformal universality conjecture. Then K1K_1 is quasi-symmetric to K2K_2. More generally, let KiK_i be limit sets of geometrically finite conformal dynamical systems, such as limit sets of geometrically finite Kleinian groups or Julia sets of geometrically finite rational maps. If K1K_1 and K2K_2 have conformal dimension 11 and are homeomorphic via a type-preserving map, then K1K_1 is quasi-symmetric to K2K_2. The conjecture proposes universality for conformal-dimension-one limit sets, extending known rigidity and universality phenomena; the source gives no resolution.

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Primary source

Yusheng Luo, Mahan Mj and Sabyasachi Mukherjee, “Universality of the Basilica”, arXiv:2601.13553 (2026).

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