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 Dec 20 accepted All the binary n-words without the sequence 011 Dec 19 asked All the binary n-words without the sequence 011 Dec 12 awarded Tumbleweed Dec 5 asked Relation of Smith normal form to basis of subgroup Dec 5 comment Finding suitable basis for a free abelian finitely generated group. It looks like I am taking the exact same course exactly a year later, as the question fits the one appearing on my homework, no one explained anything about Smith normal form to us, and I have no idea what do to.. (also your name fits the area :P). Let's hope the single answer here will help me get on my way... Dec 5 comment Finding the function of the power series $\sum\limits _{n=1}^{\infty}\frac{x^{2n+1}}{n}$ That's a lot simpler than my way... Dec 5 accepted Finding the function of the power series $\sum\limits _{n=1}^{\infty}\frac{x^{2n+1}}{n}$ Dec 5 comment Finding the function of the power series $\sum\limits _{n=1}^{\infty}\frac{x^{2n+1}}{n}$ @r9m yep, you are right... Dec 5 asked Finding the function of the power series $\sum\limits _{n=1}^{\infty}\frac{x^{2n+1}}{n}$ Nov 28 comment Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? Well, that should have been pretty obvious to me looking back at it.. Thanks for clearing it all up anyway Nov 28 accepted Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? Nov 28 comment Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? @JohnMa don't really think I am.. The theorem in Wikipedia doesn't mention anything on a bound for any closed interval. Would it have any affect on all of $\mathbb{R}$ to have such a bound? en.wikipedia.org/wiki/Uniform_convergence#To_differentiability Nov 28 revised Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? edited tags Nov 28 asked Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? Nov 26 accepted If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? Nov 24 awarded Self-Learner Nov 24 comment If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? @Did I didn't really understand your second comment though, but I did take the first one somewhere, and I'd love to know if my answer is correct :P Nov 24 answered If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? Nov 24 comment If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? @Did Thinking about it so far, still not sure.. Definitely feels like I'm missing something simple though.. Nov 24 asked If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges?