Exel and Stacey crossed products, and Cuntz-Pimsner algebras

Details Exel and Stacey crossed products, and Cuntz-Pimsner algebras Exel and Stacey crossed products, and Cuntz-Pimsner algebras

2011-07-06

arxiv.org/abs/1107.1019v1

Mathematics

Operator Algebras

Scientific paper

There are many different crossed products by an endomorphism of a C*-algebra, and constructions by Exel and Stacey have proved particularly useful. Here we show that every Exel crossed product is isomorphic to a Stacey crossed product (though by a different endomorphism of a different C*-algebra), that every Stacey crossed product is an Exel crossed product, and answer some questions raised by Ionescu and Muhly. While this manuscript is not yet in its final form(s) several people have already used our results, so we are posting it now.

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