Reciprocal conjecture for Banach spaces of holomorphic functions

Let Ω\Omega be a domain and let B(Ω)B(\Omega) be the Banach space of holomorphic functions on Ω\Omega. Reciprocal conjecture. If ψB(Ω)\psi\in B(\Omega) and there exists a constant c>0c>0 such that

ψ(z)c|\psi(z)|\geq c

for all zΩz\in\Omega, then 1/ψB(Ω)1/\psi\in B(\Omega). This is proposed as an analogue of Zhu's reciprocal problem for weighted Bergman spaces. The source presents it as a conjecture for a general Banach space of holomorphic functions; its resolution is not specified.

Sources & referencesView supporting material

Primary source

Guangfu Cao, Li He and Ji Li, “Evaluation functions and composition operators on Banach spaces of holomorphic functions”, arXiv:2211.12236 (2023).

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