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Q3138565 - MaRDI portal

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    24 October 1994
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    \(L^ 2\)-Betti numbers
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    Novikov-Shubin invariants
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    Laplace operator acting on the differential forms
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    homotopy invariants
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    Hilbert complex
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    near cohomology
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    dilatational equivalence
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    spectral density function
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    Hilbert-de Rham complex of the universal covering of a closed manifold
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    von Neumann algebra of the fundamental group
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