Compressions on Partially Ordered Abelian Groups
نویسندگان
چکیده
If A is a C*-algebra and p ∈ A is a self-adjoint idempotent, the mapping a 7→ pap is called a compression on A. We introduce effect-ordered rings as generalizations of unital C*-algebras and characterize compressions on these rings. The resulting characterization leads to a generalization of the notion of compression on partially ordered abelian groups with order units.
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تاریخ انتشار 2004