The positive-area conjecture for non-removable curves

Let CH(γ)\textrm{CH}(\gamma) be the set of homeomorphisms of the Riemann sphere that are conformal off a curve c(cgamma)c(cgamma). A curve is conformally removable if every element of CH(cgamma)\textrm{CH}(cgamma) is a Möbius transformation. The positive-area conjecture. If cgammacgamma is a non-removable curve, then there exists cphicinctextCH(cgamma)cphicinctext{CH}(cgamma) such that cphi(cgamma)cphi(cgamma) has positive area. This conjecture has been open for over 30 years and is proved in the paper for the generic class of Jordan curves consisting of flexible curves.

Sources & referencesView supporting material

Primary source

Alex Rodriguez, “Flexible curves and Hausdorff dimension”, arXiv:2601.14125 (2026).

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