We present a theorem about calculation of fixed point index for k-psi-contractive operators with 0 ≤ k < 1 defined on a radial set of a wedge of an infinite-dimensional Banach space.Then, results on the existence of eigenvectors and nonzero fixed points are obtained.
On boundary conditions for wedge operators on radial sets
CAPONETTI D;TROMBETTA A;TROMBETTA G
2008-01-01
Abstract
We present a theorem about calculation of fixed point index for k-psi-contractive operators with 0 ≤ k < 1 defined on a radial set of a wedge of an infinite-dimensional Banach space.Then, results on the existence of eigenvectors and nonzero fixed points are obtained.File in questo prodotto:
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