Decomposable Weak Expectations

Autor: Bhattacharya, Angshuman, Kulkarni, Chaitanya J.
Rok vydání: 2022
Předmět:
Druh dokumentu: Working Paper
Popis: In this article we define a special class of weak expectations for a representation of a separable unital C*-algebra, called decomposable weak expectation. We give necessary and sufficient conditions for such kind of weak expectations to exist for a given representation. Then we define decomposable measures on the state space of a C*-algebra and show that the GNS representation of a state admits a decomposable weak expectation if and only if there is a decomposable measure on the state space. Further we give an example of a decomposable weak expectation.
Comment: Some revisions done, example added. 21p
Databáze: arXiv