Question

Factorization of rank one operators in $A \otimes B(H)$

score 77 · Answer 1 · 2022-05-27 05:06:44

77

Views

Factorization of rank one operators in $A \otimes B(H)$

Published on 27 May 2022 - 5:06

score 39 · Answer 2 · 2026-04-13 04:34:59

39

Views

The essential numerical range of $\lambda I+T$ is a one-point set

Published on 13 Apr 2026 - 4:34

score 34 · Answer 3 · 2026-04-09 09:22:17

34

Views

Extending a certain bound to the von Neumann tensor product

Published on 09 Apr 2026 - 9:22

score 68 · Answer 4 · 2026-03-31 22:44:39

68

Views

decomposition induced by a conditional expectation on $C^*$-algebras

Published on 31 Mar 2026 - 22:44

score 41 · Answer 5 · 2026-04-13 10:42:40

41

Views

Characterization of positive elements of the subspace spanned by $1,~z$ and $\bar z$ in $C(\mathbb T)$

Published on 13 Apr 2026 - 10:42

score 18 · Answer 6 · 2022-05-31 11:53:42

18

Views

Respresentations of $A$ and $B$ satisfying $\pi_1(a)\pi_2(b)= \pi_2(b)\pi_1(a)$ and $\|x\|_\text{max}=\|\pi_1.\pi_2(x)\|$

Published on 31 May 2022 - 11:53

score 54 · Answer 7 · 2026-04-13 17:12:34

54

Views

The corrollary of the pinching theorem

Published on 13 Apr 2026 - 17:12

score 61 · Answer 8 · 2026-04-13 03:53:18

61

Views

$a|a|^{-1}$ unitary for $a$ in a unital $C^*$-algebra?

Published on 13 Apr 2026 - 3:53

score 61 · Answer 9 · 2026-04-13 06:28:24

61

Views

Strongly closed $*$-subalgebra of $B(H)$ which does not contain the identity element of $B(H)$

Published on 13 Apr 2026 - 6:28

score 55 · Answer 10 · 2026-04-13 15:04:13

55

Views

Considering Haar integral as an element of an algebra

Published on 13 Apr 2026 - 15:04

score 100 · Answer 11 · 2026-04-01 20:24:00

100

Views

$\lVert a \rVert = 1 = \lVert a^{-1} \rVert \Rightarrow a^* = a^{-1}$

Published on 01 Apr 2026 - 20:24

score 78 · Answer 12 · 2026-04-13 10:16:32

78

Views

How to show the norm of the difference of two pure state is 2?

Published on 13 Apr 2026 - 10:16

score 53 · Answer 13 · 2026-04-13 06:25:49

53

Views

Do GNS projections corresponding to commuting subalgebras commute?

Published on 13 Apr 2026 - 6:25

score 138 · Answer 14 · 2026-04-13 16:35:41

138

Views

Do GNS-projections of different tensor factors commute?

Published on 13 Apr 2026 - 16:35

score 21 · Answer 15 · 2022-06-06 13:03:21

21

Views

A non-positive product of positive elements in the unital $C^*$-algebra $C([0, 1], \mathbb{C})$

Published on 06 Jun 2022 - 13:03

List Question

Factorization of rank one operators in $A \otimes B(H)$

The essential numerical range of $\lambda I+T$ is a one-point set

Extending a certain bound to the von Neumann tensor product

decomposition induced by a conditional expectation on $C^*$-algebras

Characterization of positive elements of the subspace spanned by $1,~z$ and $\bar z$ in $C(\mathbb T)$

Respresentations of $A$ and $B$ satisfying $\pi_1(a)\pi_2(b)= \pi_2(b)\pi_1(a)$ and $\|x\|_\text{max}=\|\pi_1.\pi_2(x)\|$

The corrollary of the pinching theorem

$a|a|^{-1}$ unitary for $a$ in a unital $C^*$-algebra?

Strongly closed $*$-subalgebra of $B(H)$ which does not contain the identity element of $B(H)$

Considering Haar integral as an element of an algebra

$\lVert a \rVert = 1 = \lVert a^{-1} \rVert \Rightarrow a^* = a^{-1}$

How to show the norm of the difference of two pure state is 2?

Do GNS projections corresponding to commuting subalgebras commute?

Do GNS-projections of different tensor factors commute?

A non-positive product of positive elements in the unital $C^*$-algebra $C([0, 1], \mathbb{C})$

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