List questions from banach-algebras

Published on 15 Jun 2012 - 20:03

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Criterion for a limit of invertible operators on a Banach space to be invertible

Published on 18 Jun 2012 - 20:06

305

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Unital nonabelian banach algebra where the only closed ideals are $\{0\}$ and $A$

Published on 29 Jun 2012 - 0:28

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Non-$C^{*}$ Banach algebras?

Published on 30 Jun 2012 - 23:51

241

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References on Algebraic Operators

Published on 01 Jul 2012 - 14:47

819

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Maximal ideal space of a quotient or Banach subalgebra

Published on 05 Jul 2012 - 15:46

1.2k

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If $a\ge 0$ and $b\ge 0$, then $\sigma(ab)\subset\mathbb{R}^+$.

Published on 09 Jul 2012 - 1:36

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Linear functionals can be decomposed as linear combinations of positive ones?

Published on 09 Jul 2012 - 18:40

270

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Every ideal has an approximate identity?

Published on 12 Jul 2012 - 0:18

112

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What does $(B+I)/I\sim B/(B\cap I)$ tell us?

Published on 16 Jul 2012 - 19:41

58

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Topology of $(\mathcal{A},*)$ determined by $\mathcal{A}_{sa}$?

Published on 18 Jul 2012 - 14:41

893

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Why are compact operators 'small'?

Published on 20 Jul 2012 - 1:44

1.3k

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Schwarz inequality for unital completely positive maps

Published on 22 Jul 2012 - 19:39

185

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Continuity of Translation of the Trigonometric Polynomials

Published on 24 Jul 2012 - 18:13

301

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When is a Banach Algebra stellar?

Published on 26 Jul 2012 - 17:35

List Question

Nonhermitian elements whose spectra are real?

Criterion for a limit of invertible operators on a Banach space to be invertible

Unital nonabelian banach algebra where the only closed ideals are $\{0\}$ and $A$

Non-$C^{*}$ Banach algebras?

References on Algebraic Operators

Maximal ideal space of a quotient or Banach subalgebra

If $a\ge 0$ and $b\ge 0$, then $\sigma(ab)\subset\mathbb{R}^+$.

Linear functionals can be decomposed as linear combinations of positive ones?

Every ideal has an approximate identity?

What does $(B+I)/I\sim B/(B\cap I)$ tell us?

Topology of $(\mathcal{A},*)$ determined by $\mathcal{A}_{sa}$?

Why are compact operators 'small'?

Schwarz inequality for unital completely positive maps

Continuity of Translation of the Trigonometric Polynomials

When is a Banach Algebra stellar?

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