Which is the main reason of defining a $C^*$- system as a pair of a $C^*$- algebra and a (unital) positive map $\Phi : \mathfrak{A} \rightarrow \mathfrak{A}$ ? What is the main reason behind choosing the dynamics to be a positive map on this context?
2026-03-31 05:38:56.1774935536
$C^*$- systems with positive maps
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