List questions from operator-algebras

Published on 28 Mar 2026 - 8:48

43

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$\mathbb{T} \to \Omega(l^1(\mathbb{Z}))$ is surjective, where $\Omega(l^1(\mathbb{Z}))$ is the set of characters of $l^1(\mathbb{Z})$

Published on 01 Jul 2023 - 4:52

1.1k

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Deriving the gradient operator in spherical coordinates

Published on 28 Mar 2026 - 0:46

79

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Relationship between Calkin Algebra and Fredholm operators

Published on 04 Jul 2023 - 19:14

35

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If $T\in B(H)$ and let $U,V\in B(H)$ be two isomtries such that $TT^=UU^$ and $T^T=VV^$. Is it true that $T=USV^*$ for some unitary S?

Published on 27 Mar 2026 - 17:06

66

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Topology on a $II_1$-factor is induced by the $\|.\|_2$-norm

Published on 28 Mar 2026 - 10:16

55

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Norm of elementary tensors in projective tensor product of Banach spaces

Published on 08 Jul 2023 - 16:45

78

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Modules over C-algebras and W-algebras

Published on 28 Mar 2026 - 10:16

54

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The equation $ab+ba=0, a=a^, b=b^$ in a $C^*$ algebra

Published on 11 Jul 2023 - 21:13

29

Views

An Ideal Correspondence For Twisted C*-Dynamical Sytems?

Published on 27 Mar 2026 - 14:30

17

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How to derive or understand the quantum detailed balance condition for Markov open system?

Published on 30 Mar 2026 - 11:22

125

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A question on disjointness preserving operator

Published on 12 Jul 2023 - 8:26

77

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Spectrum of a hermitian element of a C* algebra is connected?

Published on 12 Jul 2023 - 16:59

112

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Von Neumann algebra decomposition as integral of factors and mixed state decomposition as sum of irreducible states

Published on 25 Mar 2026 - 17:41

45

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If $\varphi : A\to B$ is surjective, then is $GL_{0}\left(B\right)$ contained in $\varphi\left(GL\left(A\right)\right)$?

Published on 17 Jul 2023 - 3:08

List Question

Spectrum of a bounded function

$\mathbb{T} \to \Omega(l^1(\mathbb{Z}))$ is surjective, where $\Omega(l^1(\mathbb{Z}))$ is the set of characters of $l^1(\mathbb{Z})$

Deriving the gradient operator in spherical coordinates

Relationship between Calkin Algebra and Fredholm operators

If $T\in B(H)$ and let $U,V\in B(H)$ be two isomtries such that $TT^=UU^$ and $T^T=VV^$. Is it true that $T=USV^*$ for some unitary S?

Topology on a $II_1$-factor is induced by the $\|.\|_2$-norm

Norm of elementary tensors in projective tensor product of Banach spaces

Modules over C-algebras and W-algebras

The equation $ab+ba=0, a=a^, b=b^$ in a $C^*$ algebra

An Ideal Correspondence For Twisted C*-Dynamical Sytems?

How to derive or understand the quantum detailed balance condition for Markov open system?

A question on disjointness preserving operator

Spectrum of a hermitian element of a C* algebra is connected?

Von Neumann algebra decomposition as integral of factors and mixed state decomposition as sum of irreducible states

If $\varphi : A\to B$ is surjective, then is $GL_{0}\left(B\right)$ contained in $\varphi\left(GL\left(A\right)\right)$?

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