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Segal's spectral sequence in twisted equivariant K-theory for proper and discrete actions

We use a spectral sequence developed by Graeme Segal in order to understand the twisted G-equivariant K-theory for proper and discrete actions. We show that the second page of this spectral sequence is isomorphic to a version of Bredon cohomology with local coefficients in twisted representations. We furthermore explain some phenomena concerning the third differential of the spectral sequence, and we recover known results when the twisting comes from finite order elements in discrete torsion.

preprint2015arXivOpen access
Noe BarcenasJesus EspinozaBernardo UribeMario Velasquez
math.ATmath.KT
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Noe BarcenasJesus EspinozaBernardo UribeMario Velasquez

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