On the Bernstein-Nikolsky inequality. II
type: Item
instance of: scholarly article
title: On the Bernstein-Nikolsky inequality. II
zbMATH Open document ID: 0848.46014
author: Ha Huy Bang
published in: Tokyo Journal of Mathematics
publication date: 1996-10-24T00:00:00Z
review text: There are considered Orlicz spaces \(L_\Phi (\mathbb{R}^n)\) with the Luxemburg norm \(|\cdot |_\Phi\) and spaces \(M_{\sigma, \Phi}\) of all entire functions of exponential type \(\sigma\) which as functions of real \(x\in \mathbb{R}^n\) belong to \(L_\Phi (\mathbb{R}^n)\). The author considers a connection between the spaces \({\mathcal S}'\) and \(M_{\sigma, \Phi}\) (Theorems 1 and 2, respectively) and properties of the elements from \(M_{\sigma, \Phi}\) and \(L_\Phi (\mathbb{R}^n)\) (Theorems 3 and 4, respectively). Very important is Theorem 5 with a nice proof which says that if \(f\) is such that \(D^\alpha f(x)\in L_\Phi (\mathbb{R}^n)\) (where \(\alpha\) is a multi-index) then \[ \liminf_{|\alpha |\to \infty} (|\xi^{-\alpha} |\;|D^\alpha f|_\Phi )^{1/ |\alpha |}\geq 1. \] [For part I see \textit{M. Morimoto} and the author, same J. 14,No. 1, 231-238 (1991; Zbl 0803.41017)].
Mathematics Subject Classification ID: 46E30
Mathematics Subject Classification ID: 41A17
zbMATH DE Number: 821714
zbMATH Keywords: Orlicz spaces
zbMATH Keywords: Luxemburg norm
zbMATH Keywords: entire functions of exponential type
reviewed by: Aleksander Waszak
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.3836/tjm/1270043613
OpenAlex ID: W4256116249
DOI: 10.3836/TJM/1270043613
description: scientific article; zbMATH DE number 821714