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A generalization of Krasnosel'skii compression fixed point theorem by using star convex sets

Published online by Cambridge University Press:  25 January 2019

Cristina Lois-Prados
Affiliation:
Instituto de Matemáticas, Facultade de Matemáticas, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain (cristina.lois.prados@usc.es; rosana.rodriguez.lopez@usc.es)
Rosana Rodríguez-López
Affiliation:
Instituto de Matemáticas, Facultade de Matemáticas, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain (cristina.lois.prados@usc.es; rosana.rodriguez.lopez@usc.es)

Abstract

In the framework of fixed point theory, many generalizations of the classical results due to Krasnosel'skii are known. One of these extensions consists in relaxing the conditions imposed on the mapping, working with k-set contractions instead of continuous and compact maps. The aim of this work if to study in detail some fixed point results of this type, and obtain a certain generalization by using star convex sets.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 2019

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