List questions from operator-algebras

Published on 21 Mar 2016 - 13:06

1k

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Uniqueness of positive square root of postive element in C* algebra

Published on 03 Apr 2026 - 18:24

902

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irreducible implies the commutant consists of multiples of identity?

Published on 03 Apr 2026 - 20:16

60

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When set of projections is closed under multiplication

Published on 29 Mar 2026 - 12:52

53

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What are some specific operations for matrices, like is dot product for vectors?

Published on 31 Mar 2016 - 12:44

173

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Most natural equivalence between $C^*$-algebras

Published on 01 Apr 2026 - 0:54

68

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Positive Map: Reduction

Published on 03 Apr 2026 - 20:11

234

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Hermitian Pairings from Positive Functionals

Published on 28 Mar 2026 - 8:08

76

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Two identities concerning reduced crossed products

Published on 02 Apr 2016 - 14:00

40

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How can we view $\operatorname{Hom}(V,V((x)))$ as a subspace of $(\mathrm{End}V)[[x,x^{-1}]]$?

Published on 03 Apr 2016 - 7:31

80

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An strongly open set which is not measurable in the weak operator topology.

Published on 03 Apr 2016 - 9:33

63

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Is $\mathbb{C}^n$ a C*-algebra?

Published on 04 Apr 2016 - 4:24

267

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Is there an example of a non von Neumann algebra with this property?

Published on 29 Mar 2026 - 12:52

2k

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What is the motivation for Murray-von Neumann equivalence

Published on 29 Mar 2026 - 12:52

74

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Is the index of a Fredholm operator in a $C^*$-algebra independent of the choice of representation?

Published on 01 Apr 2026 - 16:46

List Question

Classification of vector bundles over the torus

Uniqueness of positive square root of postive element in C* algebra

irreducible implies the commutant consists of multiples of identity?

When set of projections is closed under multiplication

What are some specific operations for matrices, like is dot product for vectors?

Most natural equivalence between $C^*$-algebras

Positive Map: Reduction

Hermitian Pairings from Positive Functionals

Two identities concerning reduced crossed products

How can we view $\operatorname{Hom}(V,V((x)))$ as a subspace of $(\mathrm{End}V)[[x,x^{-1}]]$?

An strongly open set which is not measurable in the weak operator topology.

Is $\mathbb{C}^n$ a C*-algebra?

Is there an example of a non von Neumann algebra with this property?

What is the motivation for Murray-von Neumann equivalence

Is the index of a Fredholm operator in a $C^*$-algebra independent of the choice of representation?

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