Housekeeping.

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Bokuan Li
2026-10-19 14:30:38 -04:00
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\begin{theorem}[Stinespring's Dilation Theorem]
\label{theorem:stinespring-dilation}
Let $A$ be a unital $C^*$-algebra, $H$ be a complex Hilbert space, and $\phi: A \to B(H)$ be a completely positive map, then there exists a triple $(K, V, \pi)$, where:
Let $A$ be a unital $C^*$-algebra, $H$ be a complex Hilbert space, and $\phi: A \to B(H)$ be a completely positive map, then there exists a triple $(\pi, V, K)$, where:
\begin{enumerate}[label=(\alph*)]
\item $K$ is a complex Hilbert space.
\item $V: H \to K$ is a continuous linear map.
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\item Under the identification that $H = V(H) \subset K$, $(K, \pi(a))$ is a dilation of $\phi(a)$ for all $a \in A$.
\end{enumerate}
The triple $(K, V, \pi)$ is a \textbf{Stinespring representation} of $\phi$. If $\bracsn{\pi(a)VH|a \in A}$ is dense in $K$, then $(K, V, \pi)$ is \textbf{minimal}.
The triple $(\pi, V, K)$ is a \textbf{Stinespring representation} of $\phi$. If $\bracsn{\pi(a)VH|a \in A}$ is dense in $K$, then $(\pi, V, K)$ is \textbf{minimal}.
\end{theorem}
\begin{proof}[Proof, {{\cite[Theorem 4.1]{Paulsen}}}. ]
(a): Let $A \otimes H$ and define the Hermitian form
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\]
so $V$ is an isometry.
\end{proof}
\begin{proposition}[Multiplicative Domain of Stinespring Representations]
\label{proposition:stinespring-multiplicative-domain}
Let $A$ be a unital $C^*$-algebra, $H$ be a complex Hilbert space, $\phi: A \to B(H)$ be a unital completely positive map, and $()
\end{proposition}
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\chapter{Operator Systems}
\label{chap:opertaor-systems}
\input{./dilation.tex}
\input{./os.tex}
\input{./two.tex}
\input{./completely.tex}
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\input{./module.tex}
\input{./numerical-radius.tex}
\input{./schur.tex}
\input{./dilation.tex}