List questions from self-adjoint-operators

Published on 05 Feb 2024 - 23:29

35

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Sum of the spectra of two s-a operators

Published on 06 Feb 2024 - 20:44

34

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$0 ≤ A ≤ I. $ $\iff$ ⟨ψ|A|ψ⟩ ∈ [0, 1] for every unit vector $|ψ⟩ ∈ H$

Published on 23 Feb 2024 - 6:52

23

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When is the operator associated to a sesquilinear form normal?

Published on 26 Feb 2024 - 8:58

57

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Operator norm of powers of bounded normal operators and self adjoint operators on Hilbert space

Published on 12 Mar 2024 - 15:27

47

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Inequality for spectral families of self-adjoint operators

Published on 25 Mar 2026 - 23:10

91

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Weinstein's bound on eigenvalues of self-adjoint operators

Published on 14 Mar 2024 - 20:05

63

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exponential of operators - Trotter product formula

Published on 19 Mar 2024 - 20:11

24

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Product of a Hilbert-Schmidt operator and a Kato perturbation of a self-adjoint operator

Published on 25 Mar 2026 - 23:11

18

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Inequality for inverse of an unbounded self-adjoint operator

Published on 23 Mar 2024 - 16:34

28

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On functions of a self-adjoint operator of the form $U^{-1} A U$

Published on 23 Feb 2026 - 21:16

4.6k

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Is the self-adjoint condition required in the definition of a positive operator?

Published on 15 Feb 2016 - 16:18

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Prove that if $A=A^*$ then there exists an orthonormal basis of eigenvectors with real eigenvalues

Published on 26 Mar 2016 - 1:30

717

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Expectation value of pure state in quantum mechanics

Published on 12 Apr 2013 - 13:56

298

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Determine if a transformation is self-adjoint with respect to a non-orthonormal basis

Published on 15 May 2013 - 10:56

List Question

Find the norm of the following operator

Sum of the spectra of two s-a operators

$0 ≤ A ≤ I. $ $\iff$ ⟨ψ|A|ψ⟩ ∈ [0, 1] for every unit vector $|ψ⟩ ∈ H$

When is the operator associated to a sesquilinear form normal?

Operator norm of powers of bounded normal operators and self adjoint operators on Hilbert space

Inequality for spectral families of self-adjoint operators

Weinstein's bound on eigenvalues of self-adjoint operators

exponential of operators - Trotter product formula

Product of a Hilbert-Schmidt operator and a Kato perturbation of a self-adjoint operator

Inequality for inverse of an unbounded self-adjoint operator

On functions of a self-adjoint operator of the form $U^{-1} A U$

Is the self-adjoint condition required in the definition of a positive operator?

Prove that if $A=A^*$ then there exists an orthonormal basis of eigenvectors with real eigenvalues

Expectation value of pure state in quantum mechanics

Determine if a transformation is self-adjoint with respect to a non-orthonormal basis

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