# Juntao Huang

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bio website location Beijing, China age 21 member for 1 year, 2 months seen Nov 30 '12 at 8:02 profile views 18

An undergraduate at Tsinghua University in China

# 24 Actions

 Jun10 awarded Teacher Jun10 comment Proving unique weak solution.For the second question,you can use the representation theorem in Hilbert Space.For more details,you can read Page 118 in the PDE by Fritz John. Jun10 answered Proving unique weak solution. Jun10 awarded Editor Jun10 revised The distinction between infinitely differentiable function and real analytic functionadded 15 characters in body Jun10 asked The distinction between infinitely differentiable function and real analytic function Jun4 accepted A problem concerning Series Jun4 comment A problem concerning SeriesOh!That's great!I never think in this way!Thank you! Jun4 asked A problem concerning Series May18 accepted A problem concerning the Measurable function May18 comment A problem concerning the Measurable functionThank you,leo!I just forget that if $f$ and $g$ are measurable in $\mathbb{R^d}$, then $fg$ is measurable in $\mathbb{R^d}$. May18 comment A problem concerning the Measurable function@Siminore.Thank you for your help.But I still cannot make it clear.I have read Page 1 of this document.I have known that $F(x,y)=f(y-x)$ is measurable on $\mathbb{R^2}$.However,why $f(y-x)g(x)$ is measurable? May18 comment A problem concerning the Measurable functionI am sorry that I do not make it clear.$f$ and $g$ are in the $\mathcal{L^1}(\mathbb{R})$,i.e. $f$ and $g$ are Lebesgue measurable functions and absolutely integrable functions in $\mathbb{R}$. May18 asked A problem concerning the Measurable function May13 awarded Scholar May13 accepted A problem about the cover of the interval May13 comment A problem about the cover of the intervalOk!I got it!I have a wrong hypothesis here.Thank you all! May12 awarded Student May12 asked A problem about the cover of the interval Apr28 awarded Tumbleweed