Geometric characterizations of some classes of operators in C*-algebras and von Neumann algebras

Geometric characterizations of some classes of operators in C*-algebras and von Neumann algebras
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by Charles Akemann and Nik Weaver PDF

Proc. Amer. Math. Soc. 130 (2002), 3033-3037 Request permission

We present geometric characterizations of the partial isometries, unitaries, and invertible operators in C*-algebras and von Neumann algebras.

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