Random Runge approximation conjecture for holomorphic functions on compact sets

From papers

Let KCK\subset\mathbb C be compact, and let f(ω,z)f(\omega,z) be a random holomorphic function on KK. A sequence Rk(ω,z)R_k(\omega,z) of random rational functions should exist such that, for each ω\omega,

Rk(ω,)f(ω,)R_k(\omega,\cdot)\rightarrow f(\omega,\cdot)

uniformly on KK.

Random Runge approximation conjecture. There is a sequence Rk(ω,z)R_k(\omega,z) of random rational functions such that, for each ω\omega, Rk(ω,)f(ω,)R_k(\omega,\cdot)\rightarrow f(\omega,\cdot) uniformly on KK.

This is proposed as a stronger version of the preceding random Runge theorem, which assumes that f(ω,)f(\omega,\cdot) is holomorphic on an open neighborhood UU of KK for every ω\omega. The conjecture seeks approximation under the weaker assumption of holomorphy on the compact set itself; its resolution is not given here.

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Sources & referencesView supporting material

Primary source

Simon St-Amant and Jérémie Turcotte, “Approximation by random complex polynomials and rational functions”, arXiv:1709.08240 (2017).

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