List questions from operator-theory

Published on 27 Mar 2026 - 13:27

51

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Interpolation between log and polynomials using Riesz-Thorin

Published on 25 Mar 2026 - 2:57

127

Views

Spectrum of product of continuous linear operators

Published on 26 Mar 2026 - 22:57

389

Views

Continuous and residual spectrum

Published on 26 Mar 2026 - 22:51

89

Views

Hyponormal operator and approximate spectrum

Published on 26 Mar 2026 - 22:50

358

Views

If composition with each functional is bounded, then the operator is bounded

Published on 27 Apr 2019 - 19:50

95

Views

Show $T: \mathbb{F}^{n \times n} \to \mathbb{F}^{n \times n},\;T(A): = BA$ is diagonalizable iff B is diagonalizable

Published on 28 Apr 2019 - 19:31

80

Views

$A \in \mathcal{L}(X,Y) \implies A^* \in \mathcal{L}(Y^_{w^}, X^_{w^})$

Published on 25 Mar 2026 - 14:22

38

Views

Notation question: $T[X]=\bigcup\limits_{n=1}^{\infty} nT[B]$.

Published on 25 Mar 2026 - 21:45

76

Views

About the adjoint of some differential operator on $L^2(0,1)$

Published on 26 Mar 2026 - 13:51

206

Views

Understanding of Weighted Shift Operators, Analytic function Theory by Allen Shields

Published on 01 May 2019 - 1:16

111

Views

Spectrum of operator $(Tx)_{i}=\sum_{j=0}^{n}\alpha_{j}x_{i+j}$

Published on 26 Mar 2026 - 22:54

37

Views

different essential ideals

Published on 27 Mar 2026 - 14:57

118

Views

trace on quotient of a $C^*$ algebra

Published on 27 Mar 2026 - 14:51

55

Views

Spectra of Closure and Adjoint for Symmetric Operator

Published on 25 Mar 2026 - 6:05

List Question

center of a $C^*$ algebra

Interpolation between log and polynomials using Riesz-Thorin

Spectrum of product of continuous linear operators

Continuous and residual spectrum

Hyponormal operator and approximate spectrum

If composition with each functional is bounded, then the operator is bounded

Show $T: \mathbb{F}^{n \times n} \to \mathbb{F}^{n \times n},\;T(A): = BA$ is diagonalizable iff B is diagonalizable

$A \in \mathcal{L}(X,Y) \implies A^* \in \mathcal{L}(Y^_{w^}, X^_{w^})$

Notation question: $T[X]=\bigcup\limits_{n=1}^{\infty} nT[B]$.

About the adjoint of some differential operator on $L^2(0,1)$

Understanding of Weighted Shift Operators, Analytic function Theory by Allen Shields

Spectrum of operator $(Tx)_{i}=\sum_{j=0}^{n}\alpha_{j}x_{i+j}$

different essential ideals

trace on quotient of a $C^*$ algebra

Spectra of Closure and Adjoint for Symmetric Operator

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