List questions from partial-differential-equations

Published on 11 May 2026 - 2:04

253

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How to solve a particular initial-boundary value problem

Published on 13 Apr 2026 - 18:03

577

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Multiply by $t$ to account for $e^t$ in the homogeneous solution

Published on 14 Apr 2026 - 10:23

257

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Prove that a function is locally Lipschitz

Published on 14 Apr 2026 - 11:59

118

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need to construct a function satisfying wave equation.

Published on 11 Apr 2026 - 13:49

683

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What differential equation might model this almost-harmonic oscillator?

Published on 13 Apr 2026 - 3:24

824

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Multi dimensional heat equation

Published on 11 Apr 2026 - 11:24

78

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Finding Fourier of $x^3$ by Fourier of $x^2$

Published on 15 Apr 2026 - 0:46

97

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If $u_n$ is bounded and pointwise convergent, then $u_n$ convges in $W_{2,p}$.

Published on 10 May 2026 - 20:57

247

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Need help on clarifying a step in proof of Plancherel's theorem in Evans' book PDE

Published on 12 Apr 2026 - 18:24

34

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Why is this true about the partials of this function?

Published on 14 Apr 2026 - 0:59

128

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Missing a necessary power in this proof - please help.

Published on 10 May 2026 - 18:41

144

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Boundary value problem-Is the solution correct?

Published on 13 Apr 2026 - 15:58

579

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The issue of treating an inverse Fourier transform in terms of a tempered distribution.

Published on 13 Apr 2026 - 23:10

3.2k

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The solution of the heat equation is unique

Published on 08 Apr 2026 - 23:04

List Question

Suppose $u \in C^2(\Omega)\cap C^1(\bar\Omega)$ satisfies $ -\Delta u+u^3=0$ in $\Omega $

How to solve a particular initial-boundary value problem

Multiply by $t$ to account for $e^t$ in the homogeneous solution

Prove that a function is locally Lipschitz

need to construct a function satisfying wave equation.

What differential equation might model this almost-harmonic oscillator?

Multi dimensional heat equation

Finding Fourier of $x^3$ by Fourier of $x^2$

If $u_n$ is bounded and pointwise convergent, then $u_n$ convges in $W_{2,p}$.

Need help on clarifying a step in proof of Plancherel's theorem in Evans' book PDE

Why is this true about the partials of this function?

Missing a necessary power in this proof - please help.

Boundary value problem-Is the solution correct?

The issue of treating an inverse Fourier transform in terms of a tempered distribution.

The solution of the heat equation is unique

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