List questions from operator-theory

Published on 29 Mar 2026 - 15:03

77

Views

$A(D) \subseteq Y$ is closed, if $X$ is reflexive, $Y$ is Banach and $D \subseteq X$ is closed, convex and bounded.

Published on 23 Feb 2026 - 1:08

254

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If $X$ is reflexive and $A \in \mathcal{L}(c_0,X)$ then show that $A$ is a compact operator.

Published on 25 Mar 2026 - 17:40

267

Views

Definition of outer product

Published on 31 Mar 2026 - 18:06

202

Views

Resolvent identity, densely defined operator

Published on 26 Mar 2026 - 17:28

68

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Monotony of the operator exponential $e^A$

Published on 03 Mar 2019 - 19:23

655

Views

Uniform boundedness principle and closed graph Theorem

Published on 25 Mar 2026 - 20:43

77

Views

Graded $C^*$ algebra homomorphism

Published on 01 Apr 2026 - 10:59

218

Views

Norm of AB+BA when A, B are well understood

Published on 25 Mar 2026 - 19:04

96

Views

Question on operator norm $\vert \vert \cdot \vert \vert$

Published on 26 Mar 2026 - 9:37

100

Views

Graded $*$-homomorphisms where are homotopic to $0$

Published on 27 Mar 2026 - 2:01

98

Views

Explaining the group structure in homotopy classes of map $[X,K(H)]$

Published on 25 Mar 2026 - 21:49

492

Views

Which of the following is true in normed linear spaces?

Published on 28 Mar 2026 - 14:44

212

Views

Tracial states and the GNS construction

Published on 27 Mar 2026 - 2:07

121

Views

Compute the operator-norm $L \in B(V,V)$

Published on 01 Apr 2026 - 22:40

List Question

$u_j \rightarrow u$ and $||Tu_j||$; exists sequence $w_k$ such that $Tw_k $ converge in norm.

$A(D) \subseteq Y$ is closed, if $X$ is reflexive, $Y$ is Banach and $D \subseteq X$ is closed, convex and bounded.

If $X$ is reflexive and $A \in \mathcal{L}(c_0,X)$ then show that $A$ is a compact operator.

Definition of outer product

Resolvent identity, densely defined operator

Monotony of the operator exponential $e^A$

Uniform boundedness principle and closed graph Theorem

Graded $C^*$ algebra homomorphism

Norm of AB+BA when A, B are well understood

Question on operator norm $\vert \vert \cdot \vert \vert$

Graded $*$-homomorphisms where are homotopic to $0$

Explaining the group structure in homotopy classes of map $[X,K(H)]$

Which of the following is true in normed linear spaces?

Tracial states and the GNS construction

Compute the operator-norm $L \in B(V,V)$

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