List questions from laplacian

Published on 13 Feb 2020 - 22:04

607

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How can I express $\nabla^2(f(r)\mathbf{r})$ with index notation?

Published on 26 Mar 2026 - 14:30

140

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Density of Domain of Laplacian Operator in $L^\infty(\mathbb{R}^{N})$

Published on 25 Mar 2026 - 22:30

75

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Why $x^TLx = \sum_{(u,v)\in E} w_{uv}(x(u)-x(v))^2$ for Laplacian L?

Published on 25 Mar 2026 - 8:09

92

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Example of a function in $L^2(\mathbb{R})$ whose second derivate is not in $L^2(\mathbb{R})$

Published on 18 Feb 2020 - 2:15

101

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Graph Laplacian appellation

Published on 25 Mar 2026 - 8:05

37

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Second Derivatives to Second Differences

Published on 29 Feb 2020 - 4:30

24

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Basic seperation of variables question: does it matter which sides we put the minus on?

Published on 29 Feb 2020 - 12:58

6.9k

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Hessian in second-order Taylor approximation

Published on 25 Mar 2026 - 23:09

147

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Green's function of a Laplacian on a Torus does not exist?

Published on 26 Mar 2026 - 9:40

343

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Laplacian of complex function proof

Published on 18 Mar 2020 - 20:34

64

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Poisson equation on $M\times \mathbb{R}$ with exponential asymptotic condition

Published on 25 Mar 2026 - 20:42

74

Views

Singular point at Neumann Boundary Condition

Published on 26 Mar 2026 - 12:52

135

Views

Spectrum of the bi-Laplacian

Published on 26 Mar 2020 - 20:09

809

Views

How to show the Laplacian is a self-adjoint linear operator

Published on 25 Mar 2026 - 12:29

List Question

Find $f(r) $ if $\nabla ^2 f(r) =0$.

How can I express $\nabla^2(f(r)\mathbf{r})$ with index notation?

Density of Domain of Laplacian Operator in $L^\infty(\mathbb{R}^{N})$

Why $x^TLx = \sum_{(u,v)\in E} w_{uv}(x(u)-x(v))^2$ for Laplacian L?

Example of a function in $L^2(\mathbb{R})$ whose second derivate is not in $L^2(\mathbb{R})$

Graph Laplacian appellation

Second Derivatives to Second Differences

Basic seperation of variables question: does it matter which sides we put the minus on?

Hessian in second-order Taylor approximation

Green's function of a Laplacian on a Torus does not exist?

Laplacian of complex function proof

Poisson equation on $M\times \mathbb{R}$ with exponential asymptotic condition

Singular point at Neumann Boundary Condition

Spectrum of the bi-Laplacian

How to show the Laplacian is a self-adjoint linear operator

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