List questions from self-adjoint-operators

Published on 14 May 2022 - 22:18

400

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Is the Sturm-Liouville operator self-adjoint?

Published on 16 May 2022 - 17:50

49

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Deficiency indices of the Laplace operator on the unit disk

Published on 22 May 2022 - 0:49

149

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Two equivalent statements for self adjoint endomorphisms

Published on 30 May 2022 - 22:18

98

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Show $P_n A P_n \longrightarrow A$ in the strong resolvent sense.

Published on 01 Jun 2022 - 22:06

142

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A question on two self-adjoint operators with same spectrum

Published on 09 Jun 2022 - 19:15

69

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Every contractive self-adjoint operator is the weak limit of projectors

Published on 09 Jun 2022 - 22:25

97

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Calculate the adjoint of the operator $D = \frac{1}{i} \frac{d}{dx}$

Published on 12 Jun 2022 - 10:42

225

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Prove that a self-adjoint operator is cyclic iff it is unitary equivalent to a multiplication operator on $L^2$

Published on 15 Jun 2022 - 8:11

42

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A basic question about the spectral theorem for self adjoint compact operator..

Published on 19 Jun 2022 - 10:37

405

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Laplace-Beltrami operator is essentially self-adjoint on a bounded domain

Published on 29 Jun 2022 - 20:53

83

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Relation between resolvent set, self adjoint and open neighborhood

Published on 23 Feb 2026 - 8:37

463

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Is self-adjoint operator in a Hilbert space is always positive operator?

Published on 18 Jul 2022 - 17:35

153

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Proof if $T \in L \left( V,V \right)$ is self-adjoint and b,c $\in \mathbb{R}$ such that $b^2 < 4c$ , then $T^2 + bT + cI$ is a positive operator.

Published on 19 Jul 2022 - 4:25

34

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Question related to a bounded operator in a Hilbert space.

Published on 19 Jul 2022 - 17:21

List Question

Eigenvalues of compact self adjoint operator that is cyclic

Is the Sturm-Liouville operator self-adjoint?

Deficiency indices of the Laplace operator on the unit disk

Two equivalent statements for self adjoint endomorphisms

Show $P_n A P_n \longrightarrow A$ in the strong resolvent sense.

A question on two self-adjoint operators with same spectrum

Every contractive self-adjoint operator is the weak limit of projectors

Calculate the adjoint of the operator $D = \frac{1}{i} \frac{d}{dx}$

Prove that a self-adjoint operator is cyclic iff it is unitary equivalent to a multiplication operator on $L^2$

A basic question about the spectral theorem for self adjoint compact operator..

Laplace-Beltrami operator is essentially self-adjoint on a bounded domain

Relation between resolvent set, self adjoint and open neighborhood

Is self-adjoint operator in a Hilbert space is always positive operator?

Proof if $T \in L \left( V,V \right)$ is self-adjoint and b,c $\in \mathbb{R}$ such that $b^2 < 4c$ , then $T^2 + bT + cI$ is a positive operator.

Question related to a bounded operator in a Hilbert space.

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