List questions from banach-algebras

289

Views

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 16 Dec 2014 - 5:22

71

Views

Homeomorphism from $K$ to $\Phi_{C(K)}$

Published on 16 Dec 2014 - 19:51

34

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operators on Hilbert spaces have adjoints

Published on 20 Dec 2014 - 6:30

232

Views

Extensions: Spectrum

Published on 21 Dec 2014 - 20:17

57

Views

Nonunital C*-Algebras: Closed Image

Published on 22 Dec 2014 - 2:04

172

Views

$p^2=p\in \bar{I}$, I ideal of Banach algebra $\Rightarrow p\in I$

Published on 23 Dec 2014 - 9:50

275

Views

What's difference between spectrum and eigenvectors of an operator

Published on 28 Dec 2014 - 6:51

60

Views

Characterspace of algebra of rational functions on compact subset of $\mathbb C$

Published on 29 Dec 2014 - 11:04

175

Views

$*-$ isomorphism between two compact spaces $K(H)$ and $K(H')$

Published on 26 Mar 2026 - 19:07

229

Views

Nonzero projection in an irreducible C*-algebra of minimal finite rank must have rank one

Published on 31 Dec 2014 - 16:54

423

Views

Norm of rotation matrix as element in $M_2(A)$

Published on 02 Jan 2015 - 23:01

68

Views

Defining a logarithm of an element of a given Banach algebra

Published on 10 Oct 2019 - 21:54

262

Views

Polar decomposition for general $C^*$-algebra

Published on 12 Oct 2019 - 21:33

25

Views

Suggestion reference for Calkin Algebras

Published on 17 Oct 2019 - 8:58

88

Views

Upper Semicontinuity of Spectral Radius

Published on 18 Oct 2019 - 20:54

List Question

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 $A$

Homeomorphism from $K$ to $\Phi_{C(K)}$

operators on Hilbert spaces have adjoints

Extensions: Spectrum

Nonunital C*-Algebras: Closed Image

$p^2=p\in \bar{I}$, I ideal of Banach algebra $\Rightarrow p\in I$

What's difference between spectrum and eigenvectors of an operator

Characterspace of algebra of rational functions on compact subset of $\mathbb C$

$*-$ isomorphism between two compact spaces $K(H)$ and $K(H')$

Nonzero projection in an irreducible C*-algebra of minimal finite rank must have rank one

Norm of rotation matrix as element in $M_2(A)$

Defining a logarithm of an element of a given Banach algebra

Polar decomposition for general $C^*$-algebra

Suggestion reference for Calkin Algebras

Upper Semicontinuity of Spectral Radius

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