Involutive equivalence bimodules and inclusions of C*-algebras with Watatani index 2
arXiv:math/0602122
Abstract
Let A be a unital C*-algebra. We shall introduce involutive A-A-equivalence bimodules and prove that any C*-algebra containing A with Watatani index 2 is constructed by an involutive A-A-equivalence bimodule.
20 pages, to appear in J. Operator Theory