The canonical partial metric and the uniform convexity on normed spaces

Sandra Oltra

Spain

Universitat Politècnica de València

Departamento de Matemática Aplicada

Salvador Romaguera

Spain

Universitat Politècnica de València

Departamento de Matemática Aplicada

E. A. Sánchez-Pérez

Spain

Universitat Politècnica de València

Departamento de Matemática Aplicada
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Accepted: 2013-11-25

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DOI: https://doi.org/10.4995/agt.2005.1954
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Keywords:

Partial metric, Convexity, Normed spaces

Supporting agencies:

Generalidad Valenciana

grant GV04B-371

the Spanish Ministry of Science and Technology

Plan Nacional I D I

grant BFM2003-02302

and FEDER

and the Polytechnical University of Valencia

Abstract:

In this paper we introduce the notion of canonical partial metric associated to a norm to study geometric properties of normed spaces. In particular, we characterize strict convexity and uniform convexity of normed spaces in terms of the canonical partial metric defined by its norm.

We prove that these geometric properties can be considered, in this sense, as topological properties that appear when we compare the natural metric topology of the space with the non translation invariant topology induced by the canonical partial metric in the normed space.

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