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1d
accepted Why convolution regularize functions?
Apr
18
comment Extension of function from $W^{1,p}(\Omega - \{x\})$ to $W^{1,p}(\Omega)$
You can solve this problem by using the following characterization: en.wikipedia.org/wiki/…
Apr
18
comment what are the equilibrium points of the following:
@1950RobertLewis, I am not so sure about it. Take a look in the message below and you will see that there is plenty of reasons for this question to be closed.
Apr
16
comment First eigenvalue of Laplacian and Poincaré inequality
Thanks for your comment @Frank. With respect to the gaps, they are intentional: I will not give you an full answer, because I want you to think about it. With respect to the typos, they are unintentional, so feel free to correct them. However, if there is some point where you are completely lost, you can leave a comment here and I will try to help you.
Apr
15
comment Vector spaces isomorphic, then dual spaces isomorphic
Maybe the word "fast" needs a definition?
Apr
15
comment Regularity of Dirichlet Eigenvalues on Lipschitz Domain
Yes, it is really useful. What is your definition for classical solutions? In some problems it is only necessary continuity on the boundary and $C^2$ in the interior.
Apr
15
comment Regularity of Dirichlet Eigenvalues on Lipschitz Domain
Take a look in Brezis book chapter 9: amazon.com/…
Apr
14
answered First eigenvalue of Laplacian and Poincaré inequality
Apr
14
comment bilinear continuous, coercive form
You are welcome @user93736
Apr
12
revised bilinear continuous, coercive form
edited tags
Apr
12
answered bilinear continuous, coercive form
Apr
9
answered Show $W^{1,p}(a,b)$ is compactly embedded in $L^p(a,b)$ for any $1<p\leq \infty$
Apr
5
answered dual of $H^1_0$: $H^{-1}$ or $H_0^1$?
Apr
5
comment convergence sequence in L^1
Have you tried something?
Apr
4
reviewed Close The Identity Theorem for real analytic functions
Apr
4
reviewed Leave Open I'm looking for the name of a transform that does the following (example images included)
Apr
3
reviewed Close $x\rightarrow \int_{0}^{x} \frac{\operatorname{sin}(t)}{t}$ is a bounded function
Apr
3
reviewed Close integral $\int\frac{1}{1+x^8}dx$ =?
Apr
3
reviewed Reviewed Is this condition sufficient to determine the linear space is of finite dimension?
Apr
3
reviewed Approve suggested edit on Prove using Rolle's Theorem that an equation has exactly one real solution.