ON SEMILINEAR OPERATOR EQUATIONS WITH FREDHOLM MAPPING OF NON-NEGATIVE INDEX TYPE

Yuqing Chen, Jong Kyu Kim, Donal O'Regan

Abstract


In this paper, we construct a generalized degree theory of Browder-Petryshyn or Petryshyn type for a class of semilinear operator equations involving a Fredholm type mapping with positive index or infinite dimensional kernel.

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ISSN: 1229-1595 (Print), 2466-0973 (Online)

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