# Crossed products by spectrally free actions

@inproceedings{Pasnicu2013CrossedPB, title={Crossed products by spectrally free actions}, author={Cornel Pasnicu and N. Christopher Phillips}, year={2013} }

Abstract We define spectral freeness for actions of discrete groups on C*-algebras. We relate spectral freeness to other freeness conditions; an example result is that for an action α of a finite group G , spectral freeness is equivalent to strong pointwise outerness, and also to the condition that Γ ˜ ( α g ) ≠ { 1 } for every g ∈ G ∖ { 1 } . We then prove permanence results for reduced crossed products by exact spectrally free actions, for crossed products by arbitrary actions of Z / 2 Z… CONTINUE READING

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