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BORNOLOGIES AND LOCALLY LIPSCHITZ FUNCTIONS

Part of: Spaces with richer structures Real functions Topological linear spaces and related structures

Published online by Cambridge University Press:  15 May 2014

GERALD BEER  and
M. I. GARRIDO
GERALD BEER*
Affiliation:
Department of Mathematics, California State University Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, USA email [email protected]
M. I. GARRIDO
Affiliation:
Instituto de Matemática Interdisciplinar (IMI), Departamento de Geometría y Topología, Universidad Complutense de Madrid, 28040 Madrid, Spain email [email protected]
*
✉[email protected]
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Abstract

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Let $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}\langle X,d \rangle $ be a metric space. We characterise the family of subsets of $X$ on which each locally Lipschitz function defined on $X$ is bounded, as well as the family of subsets on which each member of two different subfamilies consisting of uniformly locally Lipschitz functions is bounded. It suffices in each case to consider real-valued functions.

Keywords

Lipschitz functionlocally Lipschitz functionuniformly locally Lipschitz functionLipschitz in the small functionfunction preserving Cauchy sequencesbornologytotally bounded setBourbaki bounded set

MSC classification

Secondary: 26A16: Lipschitz (Hölder) classes 46A17: Bornologies and related structures; Mackey convergence, etc. 54E35: Metric spaces, metrizability
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 90 , Issue 2 , October 2014 , pp. 257 - 263
Copyright
Copyright © 2014 Australian Mathematical Publishing Association Inc. 

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