Crossed products by endomorphisms, vector bundles and group duality, II

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Vasselli, Ezio;
(2004)

We study C*-algebra endomorphims which are special in a weaker sense w.r.t. the notion introduced by Doplicher and Roberts. We assign to such endomorphisms a geometrical invariant, representing a cohomological obstruction for them to be special in the usual sense. Moreo... View more
  • References (27)
    27 references, page 1 of 3

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