List questions from weak-derivatives | MathQa

Weak differentiability and diffeomorphisms

Published on 02 Jan 2025 - 21:50

Exercise 4 chapter 7 Evans book

Published on 12 Jan 2025 - 23:58

How to handle a diffusion equation with a variable diffusion coefficient with finite elements?

Published on 12 Jan 2025 - 23:43

Weak chain rule the other way round.

Published on 12 Jan 2025 - 8:45

Distributional derivative of absolute value function

Published on 12 Jan 2025 - 23:13

Is the image of gradient map from Sobolev space to Lebesgue space weakly closed?

Published on 12 Jan 2025 - 23:24

Calculate the weak formulation of $\int_\Omega \left(\alpha v(x) + \beta\Delta\Delta v(x)\right)w(x)dx=\int_\Omega \gamma w(x)dx$

Published on 12 Jan 2025 - 23:31

$-u''+u=\delta_y$ where $u(0)=u(1)=0$

Published on 12 Jan 2025 - 18:06

necessary and sufficient conditions for the existence of solution in the space $W^{k,p}$

Published on 12 Jan 2025 - 23:26

$u\in W^{1,1}(U) \Rightarrow u^+\in W^{1,1}(U)$ , where $U\subset\mathbb{R}^n$ open

Published on 12 Jan 2025 - 23:19