List questions from unbounded-operators

Published on 16 Apr 2026 - 22:38

754

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Spectrum of an unbounded operator $A$

Published on 10 Apr 2026 - 9:01

276

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$L$ is an elliptic operator?

Published on 10 May 2026 - 23:32

43

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Ellipticity of an unbounded operator $L$

Published on 10 May 2026 - 23:35

268

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Stochastic integral is a bounded operator?

Published on 09 Apr 2026 - 6:56

102

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Determine a bounded linear operator.

Published on 10 Apr 2026 - 8:10

876

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Norm of an multiplication operator

Published on 09 Apr 2026 - 22:30

1.3k

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Closed linear operators have closed kernels

Published on 12 Apr 2026 - 15:23

39

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Function on $l^{\infty}$ that assigns sum to elements of $l^1$

Published on 13 Apr 2026 - 1:24

82

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Showing that we can write $E_{\lambda}=I-E^{+}_{\lambda}$.

Published on 13 Apr 2026 - 1:41

139

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Effective strategy for determining the adjoint of an unbounded operator?

Published on 09 Apr 2026 - 2:09

2.5k

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Show that the inverse of the Laplacian is compact

Published on 14 Apr 2026 - 3:23

50

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$Af=f'$, $D(A)=\{f\in C^1[0,1]: \text{$f$ vanish near $0$}\}$. Show that $A$ is not closed.

Published on 25 Mar 2026 - 13:57

1.4k

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Restriction of self-adjoint operator self-adjoint?

Published on 09 Apr 2026 - 14:31

481

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Inverse of a square root operator.

Published on 11 Apr 2026 - 8:33

List Question

"convergence" of unbounded operators on Fock space

Spectrum of an unbounded operator $A$

$L$ is an elliptic operator?

Ellipticity of an unbounded operator $L$

Stochastic integral is a bounded operator?

Determine a bounded linear operator.

Norm of an multiplication operator

Closed linear operators have closed kernels

Function on $l^{\infty}$ that assigns sum to elements of $l^1$

Showing that we can write $E_{\lambda}=I-E^{+}_{\lambda}$.

Effective strategy for determining the adjoint of an unbounded operator?

Show that the inverse of the Laplacian is compact

$Af=f'$, $D(A)=\{f\in C^1[0,1]: \text{$f$ vanish near $0$}\}$. Show that $A$ is not closed.

Restriction of self-adjoint operator self-adjoint?

Inverse of a square root operator.

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