List questions from operator-algebras

Published on 30 Mar 2026 - 3:38

135

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Construction of the free product of $C^*$-algebras

Published on 01 Jun 2020 - 13:14

107

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Equivalent definition of decomposable map

Published on 01 Jun 2020 - 14:31

68

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definition of dec norm

Published on 02 Jun 2020 - 13:39

141

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Prove the operator matrix is positive

Published on 04 Jun 2020 - 12:13

257

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Prove that $C[0, 1]$ is NOT Approximately Finite

Published on 27 Mar 2026 - 16:03

69

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Is there a natural square root for a path of operators?

Published on 27 Mar 2026 - 16:03

220

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Adjointable operators of a certain Hilbert module

Published on 30 Mar 2026 - 22:17

109

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extension of linear maps between Banach spaces

Published on 28 Mar 2026 - 6:48

137

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Exactness of (full) group $C^*$-algebra

Published on 09 Jun 2020 - 19:35

126

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Does localisation of a faithful retraction induce an isomorphism between adjointables of Hilbert modules?

Published on 30 Mar 2026 - 22:47

81

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Given notion of “commutativity” in $C^{\ast}-$ algebra same as usual notion of commutativity?

Published on 13 Jun 2020 - 7:07

290

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Image of Borel functional calculus of a bounded normal operator

Published on 23 Feb 2026 - 10:18

90

Views

Universal completions of *algebras

Published on 26 Mar 2026 - 4:34

108

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Separability of group $C^*$-algebras

Published on 15 Jun 2020 - 16:05

List Question

The rank of a spectral projection $E_A(\Delta)$ when $\Delta \bigcap \sigma_e(A) \neq \emptyset$

Construction of the free product of $C^*$-algebras

Equivalent definition of decomposable map

definition of dec norm

Prove the operator matrix is positive

Prove that $C[0, 1]$ is NOT Approximately Finite

Is there a natural square root for a path of operators?

Adjointable operators of a certain Hilbert module

extension of linear maps between Banach spaces

Exactness of (full) group $C^*$-algebra

Does localisation of a faithful retraction induce an isomorphism between adjointables of Hilbert modules?

Given notion of “commutativity” in $C^{\ast}-$ algebra same as usual notion of commutativity?

Image of Borel functional calculus of a bounded normal operator

Universal completions of *algebras

Separability of group $C^*$-algebras

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