On the noncommutative spectral flow
classification
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math.FAmath.KT
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flowspectralnoncommutativemoduleoperatorspathsanalogouslyappears
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We define and study the noncommutative spectral flow for paths of regular selfadjoint Fredholm operators on a countably generated Hilbert C*-module. We give an axiomatic description and discuss some applications. One of them is the definition of a noncommutative Maslov index for paths of Lagrangians which appears in a splitting formula for the spectral flow. Analogously we study the spectral flow for odd operators on a graded module.
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