Coincidence points and -weakly commuting maps
Naseer Shahzad, Tayyab Kamran (2001)
Archivum Mathematicum
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In this paper we extend the concept of -weak commutativity to the setting of single-valued and multivalued mappings. We also establish a coincidence theorem for pairs of -weakly commuting single-valued and multivalued mappings satisfying a contractive type condition.