List questions from banach-algebras

Published on 12 Apr 2013 - 16:22

1.8k

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Maximal abelian subalgebra of Banach algebra is closed and contains the unit

Published on 12 Apr 2013 - 16:44

441

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C* algebra of bounded Borel functions

Published on 15 Apr 2013 - 22:24

811

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Continuous functional calculus

Published on 24 Feb 2026 - 2:09

510

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Unitary Equivalence of Two Irreducible $ * $-Representations of a GCR $ C^{*} $-Algebra that Have the Same Kernel.

Published on 21 Apr 2013 - 23:17

246

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Does *-operator be automatically continuous

Published on 23 Apr 2013 - 15:31

349

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Banach algebra: norm distance of non-invertible elements to unit element

Published on 28 Apr 2013 - 15:45

579

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Norm product inequality

Published on 29 Apr 2013 - 11:25

1.4k

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Maximal ideals in the algebra of continuously differentiable functions on [0,1]

Published on 02 May 2013 - 13:24

156

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Derivative of norm on Banach algebra

Published on 04 May 2013 - 11:14

982

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Gelfand transform and spectrum

Published on 05 May 2013 - 16:49

141

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Multiplicative functionals on Banach algebra closed in weak-* topology

Published on 06 May 2013 - 8:02

418

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A problem on bounded invertible linear operator in Banach space

Published on 07 May 2013 - 6:53

437

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The spectrum of an invertible element $x$ is $\sigma(x^{-1})=\{\lambda^{-1}: \lambda\in \sigma(x)\}$

Published on 24 Feb 2026 - 2:13

189

Views

Absolute value of an element in a C*-algebra

Published on 21 May 2013 - 18:06

List Question

simply polar elements in a ring

Maximal abelian subalgebra of Banach algebra is closed and contains the unit

C* algebra of bounded Borel functions

Continuous functional calculus

Unitary Equivalence of Two Irreducible $ * $-Representations of a GCR $ C^{*} $-Algebra that Have the Same Kernel.

Does *-operator be automatically continuous

Banach algebra: norm distance of non-invertible elements to unit element

Norm product inequality

Maximal ideals in the algebra of continuously differentiable functions on [0,1]

Derivative of norm on Banach algebra

Gelfand transform and spectrum

Multiplicative functionals on Banach algebra closed in weak-* topology

A problem on bounded invertible linear operator in Banach space

The spectrum of an invertible element $x$ is $\sigma(x^{-1})=\{\lambda^{-1}: \lambda\in \sigma(x)\}$

Absolute value of an element in a C*-algebra

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