Novikov-Shubin invariants for arbitrary group actions and their positivity
classification
🧮 math.GT
keywords
arbitrarynovikov-shubinpositivityspacesactionsapplyclassifyingdiscrete
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We extend the notion of Novikov-Shubin invariant for free G-CW-complexes of finite type to spaces with arbitrary G-actions and prove some statements about their positivity. In particular we apply this to classifying spaces of discrete groups.
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