Definition:Open Subset in Uniform Operator Topology
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Definition
Let $\struct {X, \norm {\, \cdot \,}_X}$ and $\struct {Y, \norm {\, \cdot \,}_Y}$ be normed vector spaces.
Let $\map {CL} {X, Y}$ be a continuous linear transformation space.
Let $\norm {\, \cdot \,}$ be the supremum operator norm.
Let $\tau$ be the uniform operator topology induced by $\struct {\map {CL} {X, Y}, \norm {\, \cdot \,}}$.
Suppose $U \subseteq \map {CL} {X, Y}$ is an open subset such that:
- $\forall T \in U : \exists \epsilon \in \R_{>0} : \set {S \in \map {CL} {X, Y} : \norm {S - T} < \epsilon} \subseteq U$
Then $U$ is called an open subset in $\tau$.
Sources
- 2017: Amol Sasane: A Friendly Approach to Functional Analysis ... (previous) ... (next): Chapter $\S 2.3$: The normed space $\map {CL} {X, Y}$. Strong and weak operator topologies on $\map {CL} {X, Y}$