List questions from operator-theory

Published on 25 Mar 2026 - 11:37

39

Views

Operator norm of inproduct functional

Published on 17 Mar 2026 - 2:50

51

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Compactness of the resolvent - references

Published on 25 Mar 2026 - 11:56

604

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Weak convergence under linear operators

Published on 22 Mar 2026 - 2:47

139

Views

What is $\| f \|$ where $f(x)=\sum\limits_{n=1}^\infty \frac{1}{3^n} \langle x,e_n\rangle$

Published on 26 Mar 2026 - 4:06

97

Views

A question about Kleinecke-Shirokov's theorem

Published on 24 Mar 2026 - 23:44

88

Views

Given two projections $p,q$ in a C$^{}$-algebra $E$, find all irreducible representations of $C^{}(p,q)$

Published on 22 Mar 2026 - 9:15

231

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Weakly sequentially continuous maps

Published on 22 Mar 2026 - 9:33

237

Views

Calculating spectrum and resolvent set of a linear operator (General question).

Published on 22 Mar 2026 - 10:19

829

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Operator in Hilbert space and its inverse

Published on 21 Mar 2026 - 16:09

509

Views

Operator norm of $TT^*$

Published on 26 Mar 2026 - 7:32

120

Views

bounded below operator/ Kato-Rellich

Published on 21 Mar 2026 - 16:30

350

Views

Operators with infinite rank and kernel

Published on 19 Mar 2026 - 21:33

102

Views

How to prove that inequality for every $f\in C^\infty_0(\Bbb{R})$.

Published on 20 Mar 2026 - 5:38

99

Views

Norm and boundedness of a linear operator

Published on 23 Mar 2026 - 7:10

List Question

Unbounded self-adjoint "nth-root"operators

Operator norm of inproduct functional

Compactness of the resolvent - references

Weak convergence under linear operators

What is $\| f \|$ where $f(x)=\sum\limits_{n=1}^\infty \frac{1}{3^n} \langle x,e_n\rangle$

A question about Kleinecke-Shirokov's theorem

Given two projections $p,q$ in a C$^{}$-algebra $E$, find all irreducible representations of $C^{}(p,q)$

Weakly sequentially continuous maps

Calculating spectrum and resolvent set of a linear operator (General question).

Operator in Hilbert space and its inverse

Operator norm of $TT^*$

bounded below operator/ Kato-Rellich

Operators with infinite rank and kernel

How to prove that inequality for every $f\in C^\infty_0(\Bbb{R})$.

Norm and boundedness of a linear operator

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