List questions from operator-algebras

Published on 05 Feb 2017 - 21:31

77

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Why is the algebra of bounded (left) $F$-equivariant operators weakly closed in $B(\ell^2(F))$?

Published on 27 Mar 2026 - 6:52

39

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Hilbert spaces with isomorphic endomorphism algebras

Published on 08 Feb 2017 - 16:46

236

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$\operatorname{sp}(\varphi(a))=\operatorname{sp}(a)$ for an injective unital $^{}$-homomorphism of $C^{}$-algebras

Published on 08 Feb 2017 - 18:25

539

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finite projection in semifinite von Neumann algebra

Published on 28 Mar 2026 - 1:13

1k

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Compact operators in H is the only closed non-trivial ideal.

Published on 20 Mar 2026 - 8:20

50

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A simple question about one dimesional projections

Published on 16 Feb 2017 - 4:30

217

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Non-unitary isometries in $B(H)$ are far away from invertible elements

Published on 28 Mar 2026 - 0:05

145

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Basic inequality in a Banach Algebra

Published on 28 Mar 2026 - 0:06

284

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Why is this element invertible in the Calkin algebra?

Published on 18 Feb 2017 - 16:55

118

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Finding the eigenvalues and eignevectors of this operator.

Published on 29 Mar 2026 - 23:24

348

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Viewing a UHF-algebra by an infinite tensor-product

Published on 28 Mar 2026 - 1:12

809

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Characterisation of Murray-von Neumann equivalence of subprojections

Published on 28 Mar 2026 - 1:07

129

Views

Why is stable finiteness neat?

Published on 26 Feb 2017 - 20:44

109

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What is wrong with the way this boolean expression is simplified?

Published on 27 Feb 2017 - 4:18

List Question

Complemented subspace on the space of bounded linear operators on a Hilbert space

Why is the algebra of bounded (left) $F$-equivariant operators weakly closed in $B(\ell^2(F))$?

Hilbert spaces with isomorphic endomorphism algebras

$\operatorname{sp}(\varphi(a))=\operatorname{sp}(a)$ for an injective unital $^{}$-homomorphism of $C^{}$-algebras

finite projection in semifinite von Neumann algebra

Compact operators in H is the only closed non-trivial ideal.

A simple question about one dimesional projections

Non-unitary isometries in $B(H)$ are far away from invertible elements

Basic inequality in a Banach Algebra

Why is this element invertible in the Calkin algebra?

Finding the eigenvalues and eignevectors of this operator.

Viewing a UHF-algebra by an infinite tensor-product

Characterisation of Murray-von Neumann equivalence of subprojections

Why is stable finiteness neat?

What is wrong with the way this boolean expression is simplified?

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