Spectral Flow and Bifurcation of Critica
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Patrick M Fitzpatrick; Jacobo Pejsachowicz; Lazaro Recht
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Article
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1999
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Elsevier Science
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English
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Spectral flow is a well-known homotopy invariant of paths of selfadjoint Fredholm operators. We describe here a new construction of this invariant and prove the following theorem: Let : I\_U ร R be a C 2 function on the product of a real interval I=[a, b] with a neighborhood U of the origin of a rea