List questions from c-star-algebras

Published on 12 Aug 2021 - 8:36

38

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Is it true that $I \otimes B$ is primitive ideal of $A \otimes B$?

Published on 12 Aug 2021 - 13:34

158

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state of unitization of C*-algebra

Published on 11 Apr 2026 - 22:10

58

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Spectrum of Operator on $L^2(X\times Y)$

Published on 09 Apr 2026 - 11:38

36

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Spectrum containing multiple points

Published on 11 Apr 2026 - 22:02

201

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Why is the element in the radical of a C* algebra nilpotent?

Published on 11 Apr 2026 - 15:00

79

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Simple C*-algebra under minimal norm

Published on 11 Apr 2026 - 22:02

179

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How to characterize the kernels of pure states on a $C^*$-algebra?

Published on 30 Mar 2026 - 5:29

285

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Two notions of a pure state

Published on 12 Apr 2026 - 0:29

104

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Clarification regarding a Lemma on C* algebra of compact operators from Davidson

Published on 11 Apr 2026 - 22:10

43

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How is $\mathcal L(E)$ graded? Question about Hilbert $B$-module

Published on 09 Apr 2026 - 11:56

71

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dense *-subalgebra that is not an ideal

Published on 11 Apr 2026 - 3:41

156

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On ultraweak continuity

Published on 12 Sep 2021 - 16:00

120

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A $\ast$-representation of a $C^{*}$-algebra on a Hilbert space $H$ that is non-degenerate on a dense subspace $D\subset H$.

Published on 11 Apr 2026 - 23:54

68

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If $K$ is a compact subset of a $C^{*}$-algebra $A$, then there is a $b\in A$ such that $\|ba-a\|<\delta$ for all $a\in K$.

Published on 11 Apr 2026 - 23:55

List Question

Show that the ideal is closed.

Is it true that $I \otimes B$ is primitive ideal of $A \otimes B$?

state of unitization of C*-algebra

Spectrum of Operator on $L^2(X\times Y)$

Spectrum containing multiple points

Why is the element in the radical of a C* algebra nilpotent?

Simple C*-algebra under minimal norm

How to characterize the kernels of pure states on a $C^*$-algebra?

Two notions of a pure state

Clarification regarding a Lemma on C* algebra of compact operators from Davidson

How is $\mathcal L(E)$ graded? Question about Hilbert $B$-module

dense *-subalgebra that is not an ideal

On ultraweak continuity

A $\ast$-representation of a $C^{*}$-algebra on a Hilbert space $H$ that is non-degenerate on a dense subspace $D\subset H$.

If $K$ is a compact subset of a $C^{*}$-algebra $A$, then there is a $b\in A$ such that $\|ba-a\|<\delta$ for all $a\in K$.

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