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DIANA CAPONETTI

Eigenvectors of k-psi-contractive wedge operators

  • Authors: CAPONETTI D; A TROMBETTA; G TROMBETTA
  • Publication year: 2008
  • Type: Articolo in rivista (Articolo in rivista)
  • Key words: Measure of noncompactness, k-$\psi$-contractiove operator \sep $\psi$-condensing operator \sep wedge.
  • OA Link: http://hdl.handle.net/10447/40010

Abstract

We present new boundary conditions under which the fixed point index of a strict-$\psi$-contractive wedge operator is zero. Then we investigate eigenvalues and corresponding eigenvectors of k-$\psi$-contractive wedge operators.