Muniain
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 Mar31 awarded Nice Question Mar30 awarded Yearling Dec19 awarded Yearling Dec19 asked the quantile to quantile plot for the discrete law Jul2 awarded Curious Dec7 comment calculate double integral on quadrangle domain by changing of variables I know you divide domain to small domains. But I want to calculate double integral which not need to divide. How can you do it?, or we have no any way to do it. Dec7 asked calculate double integral on quadrangle domain by changing of variables Oct23 awarded Tumbleweed Oct16 asked frechet differentiable implies uniformly continuous/ absolutely continuous? Oct8 comment continuous implies frechet differentiable? let $f(x)=|x|$ then $f$ is continuous at $0$, but not differentiable. Ok Oct7 asked continuous implies frechet differentiable? Oct5 accepted show that function is convex Oct5 comment show that function is convex what happen if we define $+\infty -\infty =+\infty$ Oct5 comment show that function is convex define $+\infty -\infty =0$ Oct5 asked show that function is convex Aug22 comment Property of $W_0^{1,p}(\Omega)$ Because $W_{0}^{1,p}\left(\Omega\right)=\overline{C_{0}^{\infty}\left(\Omega\right)}$ so we have $u_k \in C_{0}^{\infty}\left(\Omega\right)$ and $u_k$ converge to $u$ in $W^{1,p}\left(\Omega\right)$. But why $|u_k|$ has compact support. I don't understand "compact support". Can you explain more? Aug21 asked Property of $W_0^{1,p}(\Omega)$ Jun22 comment separation of quotient space Can you give me a proof or material that I can read? Jun22 comment check coercive in Lax-Milgram Yes. If "+" then so easy to prove Jun22 comment separation of quotient space oh, sorry. From $X/\sim$ is $T_1$ iff $[x]$ is closed in $X/\sim$, then $p^{-1}([x])$ is closed in $X$