Spectral flow as winding number and integral formulas

Wahl, Charlotte

doi:10.1090/S0002-9939-07-08919-8

Spectral flow as winding number and integral formulas
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by Charlotte Wahl PDF

Proc. Amer. Math. Soc. 135 (2007), 4063-4073 Request permission

Abstract:

A general integral formula for the spectral flow of a path of unbounded selfadjoint Fredholm operators subject to certain summability conditions is derived from the interpretation of the spectral flow as a winding number.

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