List questions from c-star-algebras

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Closed ideal in the hereditary C*-subalgebra

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Masas in quotients

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$a^*a$ has a non-negative spectrum

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The operator norm of complex matrices

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The set of all continuous functions on a locally compact Hausdorff space.

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How to prove, that the ordering on positive bounded operators agrees with ordering of their ranges?

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Map to multiplier algebra for C*-subalgebra

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Why isn't complex conjugation a *-homomorphism?

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Diagonalizing operator over $L^2(\mathbb{T})$

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A question on multiplicative linear functional on Banach algebra.

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If $a$ and $b$ commute in a $C^*$-algebra and $a$ is normal, then $f(a)$ and $b$ commute for any continuous $f$

Published on 24 Feb 2026 - 2:14

List Question

C*-algebra inequality closed under pertubation?

Closed ideal in the hereditary C*-subalgebra

Masas in quotients

Projections in group $C^*$-algebras

$a^*a$ has a non-negative spectrum

Representations of a C*-algebra of bounded Borel functions

Norms arising from all representations of *-algebras

The operator norm of complex matrices

The set of all continuous functions on a locally compact Hausdorff space.

How to prove, that the ordering on positive bounded operators agrees with ordering of their ranges?

Map to multiplier algebra for C*-subalgebra

Why isn't complex conjugation a *-homomorphism?

Diagonalizing operator over $L^2(\mathbb{T})$

A question on multiplicative linear functional on Banach algebra.

If $a$ and $b$ commute in a $C^*$-algebra and $a$ is normal, then $f(a)$ and $b$ commute for any continuous $f$

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