Hermite-Hadamard's Inequality and the p-HH-norm on the Cartesian Product of Two Copies of a Normed Space

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Kikianty, Eder and Dragomir, Sever S (2010) Hermite-Hadamard's Inequality and the p-HH-norm on the Cartesian Product of Two Copies of a Normed Space. Mathematical Inequalities and Applications, 13 (1). pp. 1-32. ISSN 1331-4343

Abstract

The Cartesian product of two copies of a normed space is naturally equipped with the well-known p -norm. In this paper, another notion of norm is introduced, and will be called the p - HH -norm. This norm is an extension of the generalised logarithmic mean and is connected to the p -norm by the Hermite-Hadamard’s inequality. The Cartesian product space (with respect to both norms) is complete, when the (original) normed space is. A proof for the completeness of the p - HH -norm via Ostrowski’s inequality is provided. This space is embedded as a subspace of the well-known Lebesgue-Bochner function space (as a closed subspace, when the norm is a Banach norm). Consequently, its geometrical properties are inherited from those of Lebesgue-Bochner space. An explicit expression of the superior (inferior) semi-inner product associated to both norms is considered and used to provide alternative proofs for the smoothness and reflexivity of this space.

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Additional Information

Includes bibliographical references: pp. 31-32

Item type Article
URI https://vuir.vu.edu.au/id/eprint/7383
DOI https://doi.org/10.7153/mia-13-01
Subjects Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Historical > FOR Classification > 0102 Applied Mathematics
Historical > SEO Classification > 970101 Expanding Knowledge in the Mathematical Sciences
Keywords ResPubID19716, Hermite-Hadamard inequality, Cartesian product, generalised logarithmic mean, semi-inner product
Citations in Scopus 26 - View on Scopus
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