A fixed point index for generalized inward mappings of condensing type

Lan, Kunquan; Webb, Jeffrey

doi:10.1090/S0002-9947-97-01939-9

A fixed point index for generalized inward mappings of condensing type
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by Kunquan Lan and Jeffrey Webb PDF

Trans. Amer. Math. Soc. 349 (1997), 2175-2186 Request permission

Abstract:

A fixed point index is defined for mappings defined on a cone $K$ which do not necessarily take their values in $K$ but satisfy a weak type of boundary condition called generalized inward. This class strictly includes the well-known weakly inward class. New results for existence of multiple fixed points are established.

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