From d000e08aae3043bc555dea4f098c18efc69a3b98 Mon Sep 17 00:00:00 2001 From: Bokuan Li Date: Mon, 19 Oct 2026 14:30:38 -0400 Subject: [PATCH] Housekeeping. --- src/op/system/dilation.tex | 11 ++++++++--- src/op/system/index.tex | 2 +- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/src/op/system/dilation.tex b/src/op/system/dilation.tex index ecbab47..3b58bdf 100644 --- a/src/op/system/dilation.tex +++ b/src/op/system/dilation.tex @@ -290,7 +290,7 @@ \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. @@ -309,7 +309,7 @@ \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 @@ -392,6 +392,11 @@ \] 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} + + diff --git a/src/op/system/index.tex b/src/op/system/index.tex index b2aa376..fed8176 100644 --- a/src/op/system/index.tex +++ b/src/op/system/index.tex @@ -1,7 +1,6 @@ \chapter{Operator Systems} \label{chap:opertaor-systems} -\input{./dilation.tex} \input{./os.tex} \input{./two.tex} \input{./completely.tex} @@ -9,3 +8,4 @@ \input{./module.tex} \input{./numerical-radius.tex} \input{./schur.tex} +\input{./dilation.tex}