List questions from c-star-algebras

Published on 30 Mar 2026 - 0:03

134

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Sum of Self-adjoint elements is self-adjoint

Published on 11 Apr 2026 - 0:40

36

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Show that $I$ is Lie ideal.

Published on 27 Mar 2021 - 11:15

195

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Extracting quasi-central approximate units: why is this an increasing net?

Published on 09 Apr 2026 - 15:40

73

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$\|x\| \leq \|x(h)\|$ for all $x\in A$ implies $\dim A < \infty$.

Published on 09 Apr 2026 - 15:40

167

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Non-nuclear C* subalgebras of a non-nuclear C* algebra

Published on 09 Apr 2026 - 15:39

109

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Idempotent elements in a C^*- algebra

Published on 27 Mar 2026 - 21:15

68

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Left/ Right Invertibility of an element in the spectrum

Published on 09 Apr 2026 - 15:39

61

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Left Ideals in $C^*$ algebra

Published on 01 Apr 2026 - 5:42

80

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Quasidiagonality and homotopy invariance: norm inequality occurring in the proof

Published on 09 Apr 2026 - 15:39

81

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*- homomorphism and self adjointness

Published on 03 Apr 2021 - 3:02

47

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C*- Algebra representation and Matrices

Published on 03 Apr 2021 - 4:35

107

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Build a C*-Algebra from the set of Continuous Functions

Published on 03 Apr 2021 - 4:52

151

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Von Neumann Algebra of an Infinite Group

Published on 31 Mar 2026 - 1:04

188

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about positive elements in a $C^*$- algebra

Published on 04 Apr 2021 - 23:33

List Question

Why is the unitization of $M_\infty(\mathbb{C})$ not complete?

Sum of Self-adjoint elements is self-adjoint

Show that $I$ is Lie ideal.

Extracting quasi-central approximate units: why is this an increasing net?

$\|x\| \leq \|x(h)\|$ for all $x\in A$ implies $\dim A < \infty$.

Non-nuclear C* subalgebras of a non-nuclear C* algebra

Idempotent elements in a C^*- algebra

Left/ Right Invertibility of an element in the spectrum

Left Ideals in $C^*$ algebra

Quasidiagonality and homotopy invariance: norm inequality occurring in the proof

*- homomorphism and self adjointness

C*- Algebra representation and Matrices

Build a C*-Algebra from the set of Continuous Functions

Von Neumann Algebra of an Infinite Group

about positive elements in a $C^*$- algebra

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