diff --git a/src/op/index.tex b/src/op/index.tex index 9fed099..a96fcf0 100644 --- a/src/op/index.tex +++ b/src/op/index.tex @@ -3,5 +3,6 @@ \input{./banach/index.tex} \input{./c-star/index.tex} +\input{./vn/index.tex} \input{./example/index.tex} \input{./notation.tex} \ No newline at end of file diff --git a/src/op/vn/topologies.tex b/src/op/vn/topologies.tex index d1aa930..2abae7e 100644 --- a/src/op/vn/topologies.tex +++ b/src/op/vn/topologies.tex @@ -3,7 +3,7 @@ Let $H$ be a complex Hilbert space. Thanks to its self-duality, there is a natural dual pairing \[ -B(H) \times (H \otimes H) \quad \dpn{T, \phi \otimes x}{B(H)} = \dpn{Tx, \phi}{H} +B(H) \times (H \otimes H) \to \complex \quad \dpn{T, \phi \otimes x}{B(H)} = \dpn{Tx, \phi}{H} \] Depending on the topology placed on $H \otimes H$, and the corresponding completion, a handful of different topologies arise on $B(H)$. In fact, the above duality produces a predual for $B(H)$, being the trace class operators: @@ -42,7 +42,7 @@ Now, a few facts about the more familiar operator topologies: \begin{proof} (2): By \autoref{proposition:bh-ultraweak-bounded}. - (4): Let $\angles{S_\alpha}_{\alpha \in A} \subset B$, $\angles{T_\alpha}_{\alpha \in A} \subset H$, and $S, T \in H$ such that $S_\alpha \to S$ and $T_\alpha \to T$ in the strong operator topology. Since $\{S_\alpha| \alpha \in A\}$ is equicontinuous, for any $x \in H$, + (4): Let $\angles{S_\alpha}_{\alpha \in A} \subset B$, $\angles{T_\alpha}_{\alpha \in A} \subset B(H)$, and $(S, T) \in B \times B(H)$ such that $S_\alpha \to S$ and $T_\alpha \to T$ in the strong operator topology. Since $\{S_\alpha| \alpha \in A\}$ is equicontinuous, for any $x \in H$, \[ \lim_{\alpha \in A} S_\alpha T_\alpha x = \lim_{\alpha \in A}S_\alpha Tx = \lim_{\alpha \in A}STx \]