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math.OA2014★ 11 cited
Crossed products by endomorphisms of -algebras
B. K. Kwasniewski
In the first part of the paper, we develop a theory of crossed products of a -algebra by an arbitrary (not necessarily extendible) endomorphism . We consider rel…
math.OA2014★ 9 cited
Exel's crossed product and crossed products by completely positive maps
B. K. Kwaśniewski
We introduce crossed products of a -algebra by a completely positive map relative to an ideal in . They generalize various crossed products by endomorp…