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Spectral flow as winding number and integral formulas

Charlotte Wahl
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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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Charlotte Wahl. 2007-03-10. Spectral flow as winding number and integral formulas. https://arxiv.org/abs/math/0703287

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