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JOURNALS // Proceedings of the Institute of Mathematics of the NAS of Belarus // Archive

Tr. Inst. Mat., 2008 Volume 16, Number 2, Pages 3–13 (Mi timb66)

On calculation of the relative index of zero fixed point in the degenerate case

A. V. Guminskaya

Belarusian State University

Abstract: Formulae for the relative index of zero fixed point for completely continuous operator $A$, whose domain and image are situated in a closed convex set $Q$ of a Banach space, are given. The case is considered where $A$ has a Fréchet derivative at zero and the operator of derivative has a mere eigenvector corresponding to the eigenvalue $1$.

UDC: 517.988

Received: 14.09.2007



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