Pilgrim–Thurston conjecture on strict decrease of conformal energy

From papers

Let f ⁣:(S2,A)\righttoleftarrowf\colon (S^2,A)\righttoleftarrow be a post-critically finite hyperbolic-type branched covering, and let Ep(f)\overline{E}^p(f) denote its asymptotic pp-conformal energy for p[1,]p\in[1,\infty]. Pilgrim–Thurston's conjecture. The function pEp(f)p\mapsto\overline{E}^p(f) is either constant or strictly decreasing on [1,][1,\infty]. This conjecture would imply, together with the known identity Ep(f)=1\overline{E}^{p_*}(f)=1 for p=ARC.dim(Jf)p_* = \operatorname{ARC.dim}(\mathcal{J}_f), that the Ahlfors-regular conformal dimension of a Julia set can be determined by asymptotic conformal energies. Its resolution is not given here.

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Sources & referencesView supporting material

Primary source

Insung Park, “Julia sets with Ahlfors-regular conformal dimension one”, arXiv:2209.13384 (2026).

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