List questions from c-star-algebras

Published on 27 Mar 2026 - 6:42

290

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If $I$ is a closed ideal in a C*-algebra $A$ and $J$ is a closed ideal in $I$ then $J$ is an ideal of $A$

Published on 27 Mar 2026 - 8:29

298

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$s \in L^{1}(H)$ $\iff$ $s=\sum_{i=0}^\infty x_{i} \otimes y_{i} $

Published on 26 Mar 2026 - 19:19

393

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If $H$ is a one-dimensional Hilbert space then the zero representation of a C*-algebra on $H$ is irreducible.

Published on 26 Mar 2026 - 17:33

356

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C*-algebras: Literature?

Published on 18 Dec 2014 - 16:02

35

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operators on Hilbert spaces have adjoints

Published on 27 Mar 2026 - 8:29

169

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Equality of two operators

Published on 20 Dec 2014 - 15:00

170

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A question about essential ideal

Published on 20 Dec 2014 - 19:12

1k

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Partial isometry and projection

Published on 20 Dec 2014 - 19:43

461

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Show that an operator is well-defined

Published on 20 Dec 2014 - 21:33

233

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Extensions: Spectrum

Published on 27 Mar 2026 - 8:29

33

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Extened of a representation

Published on 28 Mar 2026 - 20:53

181

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C*-algebra of polynomials?

Published on 21 Dec 2014 - 22:30

175

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Nonunital C*-Algebras: Morphism Contractive

Published on 22 Dec 2014 - 15:26

87

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Image of a commutative C*-algebra

Published on 27 Mar 2026 - 11:46

List Question

$\phi(A^+) \subset B^+$ when $\phi: A\to B$ is an isometric linear map

If $I$ is a closed ideal in a C*-algebra $A$ and $J$ is a closed ideal in $I$ then $J$ is an ideal of $A$

$s \in L^{1}(H)$ $\iff$ $s=\sum_{i=0}^\infty x_{i} \otimes y_{i} $

If $H$ is a one-dimensional Hilbert space then the zero representation of a C*-algebra on $H$ is irreducible.

C*-algebras: Literature?

operators on Hilbert spaces have adjoints

Equality of two operators

A question about essential ideal

Partial isometry and projection

Show that an operator is well-defined

Extensions: Spectrum

Extened of a representation

C*-algebra of polynomials?

Nonunital C*-Algebras: Morphism Contractive

Image of a commutative C*-algebra

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