Alyosha
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 Sep30 awarded Explainer Sep16 awarded Popular Question Sep8 comment Best Sets of Lecture Notes and Articles @AlexYoucis The Katok link has stopped working. Sep5 awarded Yearling Aug16 accepted Proving the Weierstrass M-Test with topology Aug16 asked Proving the Weierstrass M-Test with topology Aug9 asked Is there a direct way of proving that all splitting fields are isomorphic? Jul28 comment how to show that $\mathbb{Q}[\sqrt[3]{2}]$ is a field? (by elementary means) See here for a proof that if $a$ is algebraic, $F(a)=F[a]$. Jul23 comment How is $\sum_{n=1}^{\infty}\left(\psi(\alpha n)-\log(\alpha n)+\frac{1}{2\alpha n}\right)$ when $\alpha$ is great? You seem to have forgotten the $\pi^2$ term in the final line. Jul22 awarded Nice Question Jul2 awarded Curious Jul2 awarded Inquisitive Jun28 comment Binomial Congruence See if you can adapt this proof. Jun26 answered Eisenstein series is a modular form Jun26 revised Find the infinite sum of the series $\sum_{n=1}^\infty \frac{1}{n^2 +1}$ LaTeXed the trig. Jun26 answered Sums of solutions to $z^n-1 = 0$ that equal 0 Jun23 revised Does the index of a curve determine the asymptotic behaviour of certain vector fields? deleted 9 characters in body; edited title Jun23 comment Does the index of a curve determine the asymptotic behaviour of certain vector fields? @DavidH I think I'm talking about the index of the curve, sorry for the confusion of terminology (regardless, I'm talking about the thing Needham is talking about in Visual Complex Analysis, page $\approx 498$). Jun23 comment Does the index of a curve determine the asymptotic behaviour of certain vector fields? @DavidH $$\frac{1}{2\pi} \int_{\gamma} \frac{v(p)_x}{|v(p)|^2}dy- \frac{v(p)_y}{|v(p)|^2}dx.$$ Jun22 comment Does the index of a curve determine the asymptotic behaviour of certain vector fields? I think Needham calls it the winding number, I'd be happy to know the proper name for this.