List questions from laplacian

Published on 26 Mar 2026 - 20:43

151

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Laplacian in a spherical coordinate system question

Published on 25 Mar 2026 - 14:21

113

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Prove Liouville theorem without using mean value property

Published on 25 Mar 2026 - 22:23

124

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Do Neumann eigenvalues on annulus converge to Neumann eigenvalues on ball?

Published on 11 Jan 2021 - 19:28

88

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Laplace eigenvalues on unit disc intermediate step

Published on 28 Mar 2026 - 14:20

214

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Proving an identity for the quantum angular momentum operator

Published on 16 Jan 2021 - 21:32

81

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Question about the action of the operator $(-\Delta+i)^{-1}$

Published on 27 Jan 2021 - 16:54

113

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Finding seven harmonic cubics

Published on 25 Mar 2026 - 22:30

272

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Differential operator; its algebraic manipulation in deriving the Laplacian ($\nabla ^2$) formula for polar coordinates

Published on 27 Mar 2026 - 11:47

141

Views

Non-integer order and non-half-integer order solution to Helmholtz equation

Published on 08 Feb 2021 - 1:30

64

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Can I simply replace the first and second derivatives with the gradient and laplacian in the curvature of the graph of a function?

Published on 10 Feb 2021 - 0:37

138

Views

Proving Green's First Theorem for the Laplace-Beltrami

Published on 27 Mar 2026 - 22:05

98

Views

Eigenspace of a specific eigenvalue

Published on 11 Feb 2021 - 16:36

31

Views

Is a differential tensor equation still true if I raise/lower indices?

Published on 11 Feb 2021 - 21:48

80

Views

Under which domain transformations are the eigenvalues of $-\Delta$ invariant?

Published on 28 Mar 2026 - 0:28

List Question

Reference request on spherical harmonics

Laplacian in a spherical coordinate system question

Prove Liouville theorem without using mean value property

Do Neumann eigenvalues on annulus converge to Neumann eigenvalues on ball?

Laplace eigenvalues on unit disc intermediate step

Proving an identity for the quantum angular momentum operator

Question about the action of the operator $(-\Delta+i)^{-1}$

Finding seven harmonic cubics

Differential operator; its algebraic manipulation in deriving the Laplacian ($\nabla ^2$) formula for polar coordinates

Non-integer order and non-half-integer order solution to Helmholtz equation

Can I simply replace the first and second derivatives with the gradient and laplacian in the curvature of the graph of a function?

Proving Green's First Theorem for the Laplace-Beltrami

Eigenspace of a specific eigenvalue

Is a differential tensor equation still true if I raise/lower indices?

Under which domain transformations are the eigenvalues of $-\Delta$ invariant?

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