List questions from banach-algebras

Published on 09 Oct 2014 - 14:14

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A question about Invariant subspaces of an algebra.

Published on 25 Mar 2026 - 6:02

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The positive element in a C*-algebra

Published on 09 Oct 2014 - 19:19

388

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Spectrum of Rank 1 Operators

Published on 10 Oct 2014 - 0:14

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Norm of an element in a C*-algebra

Published on 10 Oct 2014 - 17:04

454

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Cyclic representation on $L^2(\mu)$

Published on 14 Oct 2014 - 6:18

342

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Positive elements in a Banach algebra

Published on 17 Oct 2014 - 6:12

250

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Approximate unit of an involutive Banach algebra

Published on 17 Oct 2014 - 7:39

225

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Positive linear functional on an involutive Banach algebra

Published on 17 Oct 2014 - 7:52

287

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spectral projection of an element in a C*-algebra

Published on 18 Oct 2014 - 6:21

68

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Is $C(\Omega)$ a C*-algebra if $\Omega$ is not locally compact, nor compact?

Published on 18 Oct 2014 - 13:47

351

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The set of analytic functions on unit circle is not a C*-algebra

Published on 18 Oct 2014 - 14:58

96

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Natural *-isomorphism

Published on 18 Oct 2014 - 15:26

105

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A lemma by Foguel and Weiss [1973]

Published on 22 Oct 2014 - 15:28

790

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An abelian Banach algebra without characters

Published on 23 Oct 2014 - 21:24

List Question

norm of a matrix that its entries are operators in B(H).

A question about Invariant subspaces of an algebra.

The positive element in a C*-algebra

Spectrum of Rank 1 Operators

Norm of an element in a C*-algebra

Cyclic representation on $L^2(\mu)$

Positive elements in a Banach algebra

Approximate unit of an involutive Banach algebra

Positive linear functional on an involutive Banach algebra

spectral projection of an element in a C*-algebra

Is $C(\Omega)$ a C*-algebra if $\Omega$ is not locally compact, nor compact?

The set of analytic functions on unit circle is not a C*-algebra

Natural *-isomorphism

A lemma by Foguel and Weiss [1973]

An abelian Banach algebra without characters

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