We investigate boundary conditions for strict-psi-contractive and psi-condensing operators. We derive results on the existence of eigenvectors with positive and negative eigenvalues and we obtain fixed point theorems for classes of noncompact operators.
A note on boundary conditions for nonlinear operators
CAPONETTI D;TROMBETTA A;TROMBETTA G
2008-01-01
Abstract
We investigate boundary conditions for strict-psi-contractive and psi-condensing operators. We derive results on the existence of eigenvectors with positive and negative eigenvalues and we obtain fixed point theorems for classes of noncompact operators.File in questo prodotto:
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