The dilation asymptotic conjecture for compact sets

Let KK be a non-empty compact subset of the complex plane, and let δn\delta_n and CC denote the quantities defined in the preceding results. Dilation asymptotic conjecture.

limnδn(K1n)C(K1n)=1.\lim_{n\to\infty}\frac{\delta_n\left(K^{\frac{1}{n}}\right)}{C\left(K^{\frac{1}{n}}\right)}=1.

This would improve the preceding result on dilation; by the Fekete–Szegő theorem, the assertion already holds when KK is non-polar.

Sources & referencesView supporting material

Primary source

Stéphane Charpentier and Konstantinos Maronikolakis, “Quantitative incomplete polynomial approximation and frequently universal Taylor series”, arXiv:2504.20240 (2025).

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