English

Mixed Bohr radius in several variables

Complex Variables 2017-12-22 v1 Functional Analysis

Abstract

Let K(Bpn,Bqn)K(B_{\ell_p^n},B_{\ell_q^n}) be the nn-dimensional (p,q)(p,q)-Bohr radius for holomorphic functions on Cn\mathbb C^n. That is, K(Bpn,Bqn)K(B_{\ell_p^n},B_{\ell_q^n}) denotes the greatest constant r0r\geq 0 such that for every entire function f(z)=αcαzαf(z)=\sum_{\alpha} c_{\alpha} z^{\alpha} in nn-complex variables, we have the following (mixed) Bohr-type inequality supzrBqnαcαzαsupzBpnf(z),\sup_{z \in r \cdot B_{\ell_q^n}} \sum_{\alpha} | c_{\alpha} z^{\alpha} | \leq \sup_{z \in B_{\ell_p^n}} | f(z) |, where BrnB_{\ell_r^n} denotes the closed unit ball of the nn-dimensional sequence space rn\ell_r^n. For every 1p,q1 \leq p, q \leq \infty, we exhibit the exact asymptotic growth of the (p,q)(p,q)-Bohr radius as nn (the number of variables) goes to infinity.

Keywords

Cite

@article{arxiv.1712.08077,
  title  = {Mixed Bohr radius in several variables},
  author = {Daniel Galicer and Martín Mansilla and Santiago Muro},
  journal= {arXiv preprint arXiv:1712.08077},
  year   = {2017}
}

Comments

25 pages

R2 v1 2026-06-22T23:26:17.222Z