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Author SHA1 Message Date
Bokuan Li
594d139e4c Slight adjustments.
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2026-08-11 18:30:55 -04:00
Bokuan Li
05bc2c6820 Changed label format. 2026-08-11 18:20:09 -04:00
3 changed files with 6 additions and 6 deletions

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@@ -166,8 +166,8 @@ After the duality of $L^p$ and $L^q$ is established for Hölder conjugate expone
\[
\norm{g}_{L^\infty(X; H)} \le \sup_{n \in \natp}\norm{g_n}_{L^\infty(X; H)} \le \norm{\phi_g}_{L^1(X; H)^*}
\]
The above argument shows that the truncation argument was technically not required. By applying the truncated case again, $\norm{g}_{L^q(X; F)} = \norm{\phi_g}_{L^p(X; E)^*}$.
A posteriori, the truncation argument was not required. By applying the truncated case again, $\norm{g}_{L^q(X; F)} = \norm{\phi_g}_{L^p(X; E)^*}$.
\end{proof}
@@ -178,7 +178,7 @@ The typical argument for $L^p$ duality requires using the Radon-Nikodym theorem
Let $(X, \cm, \mu)$ be a measure space, $K \in \RC$, $H$ be a Hilbert space over $K$, $p, q \in [1, \infty]$ be Hölder conjugates such that one of the following holds:
\begin{enumerate}[label=(\alph*)]
\item $p \in (1, \infty)$ and $q \in (1, \infty)$.
\item $p = 1$, $q = \infty$, and $\mu$ is $\sigma$-finite\footnote{This should become localisable. }.
\item $p = 1$, $q = \infty$, and $\mu$ is $\sigma$-finite\footnote{This should become localisable, under the additional hypothesis that $H$ is separable. }.
\end{enumerate}
For each $g \in L^q(X, \cm, \mu; H)$, let

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@@ -12,8 +12,8 @@
\end{enumerate}
\end{proposition}
\begin{proof}
(1), (2): Let $D \subset E$ be a countable dense subset. By the \hyperref[Arzelà-Ascoli Theorem]{theorem:arzela-ascoli}, $S$ is embedded as a subspace of $\real^D$. By \autoref{theorem:uniform-metrisable}, $\real^D$ is metrisable. By \autoref{proposition:separable-product}, $\real^D$ is separable. Thus $S$ is also metrisable and separable by \autoref{proposition:separable-metric-space}.
(1), (2): Let $D \subset E$ be a countable dense subset. By the \hyperref[Arzelà-Ascoli Theorem]{theorem:arzela-ascoli}, $S$ is embedded as a subspace of $K^D$. By \autoref{theorem:uniform-metrisable}, $\real^D$ is metrisable. By \autoref{proposition:separable-product}, $K^D$ is separable. Thus $S$ is also metrisable and separable by \autoref{proposition:separable-metric-space}.
(3): For any $A \subset E$, $A = \bigcup_{n \in \natp}A \cap nS$. By \autoref{proposition:separable-metric-space}, $A \cap nS$ is separable for each $n \in \natp$. Therefore $A$ is also separable.
\end{proof}

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@@ -225,7 +225,7 @@
\]
then $T' \in \ol{B_{M_2(B)_{sa}}(0, 1)}$. By (1), there exists a net $\angles{(R_\gamma, S_\gamma, T_\gamma)}_{\gamma \in C} \subset A^3$ such that:
\begin{enumerate}
\begin{enumerate}[label=(\roman*)]
\item For each $\gamma \in C$,
\[
\norm{\begin{bmatrix} R_\gamma & T_\gamma \\ T^*_\gamma & S_\gamma \end{bmatrix}}_{B(H^2)} \le 1