Perturbed smooth Lipschitz extensions of uniformly continuous functions on Banach spaces

We show that if Y is a separable subspace of a Banach space X such that both X and the quotient X/Y have C-p-smooth Lipschitz bump functions, and U is a bounded open subset of X, then, for every uniformly continuous function f : Y boolean AND U --> R and every epsilon > 0, there exists a C-p-s...

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Bibliographic Details
Authors: Azagra Rueda, Daniel, Fry, Robb, Montesinos Matilla, Luis Alejandro
Format: article
Publication Date:2004
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/49770
Online Access:https://hdl.handle.net/20.500.14352/49770
Access Level:Open access
Keyword:517.98
Análisis funcional y teoría de operadores
Description
Summary:We show that if Y is a separable subspace of a Banach space X such that both X and the quotient X/Y have C-p-smooth Lipschitz bump functions, and U is a bounded open subset of X, then, for every uniformly continuous function f : Y boolean AND U --> R and every epsilon > 0, there exists a C-p-smooth Lipschitz function F : X --> R such that |F(y)- f( y)| less than or equal to epsilon for every y is an element of Y boolean AND U.