Joe Li
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 Feb24 awarded Curious Feb23 comment Why $\|f-g\|=0$ if and only if $f=g$? Thanks @Winther. But by saying almost everywhere, do we need specify the measure before the definition of this norm? Feb23 revised Why $\|f-g\|=0$ if and only if $f=g$? added 89 characters in body Feb23 asked Why $\|f-g\|=0$ if and only if $f=g$? Feb21 accepted Is the integral finite if the integrand is $o(x^{-1})$? Feb21 comment Is the integral finite if the integrand is $o(x^{-1})$? Thank you @MarioCarneiro! I think the intuition is that there exist a large class of functions that converge to 0 faster than $x^{-1}$ but slower than $x^{-\alpha}$ for any $\alpha < -1$. I think I saw somewhere there's no boundary between convergence and divergence. Feb21 asked Is the integral finite if the integrand is $o(x^{-1})$? Apr30 asked Need an operator on sets similar to Cartesian product Apr18 awarded Scholar Apr18 comment Algorithm to find all feasible partition of a set Thank you so much!!! Apr18 accepted Algorithm to find all feasible partition of a set Apr17 asked Algorithm to find all feasible partition of a set Feb7 awarded Supporter Oct14 awarded Student Oct11 comment Show the union of two matching is bipartite This might work but I'm expecting a much easier answer, which should involve connected component. Oct11 comment Show the union of two matching is bipartite I have think over several hours but still unsuccessful. Oct11 asked Show the union of two matching is bipartite Aug8 awarded Teacher Aug8 awarded Informed Aug8 revised Orthogonal matrix confusion added 25 characters in body