List questions from c-star-algebras

Published on 29 Sep 2020 - 11:26

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How close is the exponential of a near-idempotent to $1$?

Published on 08 Apr 2026 - 13:10

97

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An inequality of positive maps of roots of positive operators on C*-algebras

Published on 24 Feb 2026 - 7:07

203

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Predual of a von Neumann algebra

Published on 30 Mar 2026 - 13:05

59

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Corestriction of completely positive maps

Published on 08 Oct 2020 - 10:24

111

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Definition of $C^*$-algebraic quantum group

Published on 08 Apr 2026 - 22:01

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If $\ell^1(S)$ is unital, must the semigroup $S$ have an identity?

Published on 31 Mar 2026 - 23:32

127

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Spectral projection measure of normal operators

Published on 08 Apr 2026 - 15:00

409

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Spectral projection of a self-adjoint operator

Published on 09 Apr 2026 - 8:05

261

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Closed and densely defined operator which is affiliated with a von Neumann algebra

Published on 30 Mar 2026 - 12:57

60

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Show that $A \otimes \mathbb{C}1_A \cong A$ ($C^*$-algebras)

Published on 12 Oct 2020 - 12:46

40

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Compute the center of $PB(H)P$, where $P$ is a projection

Published on 08 Apr 2026 - 14:54

107

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Commutant of a projection in $B(H)$

Published on 30 Mar 2026 - 13:05

179

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Must an abstract $C^*$-algebra that is an integral domain be a field?

Published on 09 Apr 2026 - 11:21

135

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Why are these two definitions of amenability equivalent?

Published on 17 Oct 2020 - 19:37

List Question

Representation of a C* algebra

How close is the exponential of a near-idempotent to $1$?

An inequality of positive maps of roots of positive operators on C*-algebras

Predual of a von Neumann algebra

Corestriction of completely positive maps

Definition of $C^*$-algebraic quantum group

If $\ell^1(S)$ is unital, must the semigroup $S$ have an identity?

Spectral projection measure of normal operators

Spectral projection of a self-adjoint operator

Closed and densely defined operator which is affiliated with a von Neumann algebra

Show that $A \otimes \mathbb{C}1_A \cong A$ ($C^*$-algebras)

Compute the center of $PB(H)P$, where $P$ is a projection

Commutant of a projection in $B(H)$

Must an abstract $C^*$-algebra that is an integral domain be a field?

Why are these two definitions of amenability equivalent?

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