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17h
asked Which theta function is $\theta(x;q) = (x;q)(q/x;q)$?
1d
answered A simple way to find $\lim_{n\rightarrow\infty}{\frac{1}{n^2}\sum_{k=1}^n{\sqrt{n^2-k^2}}}$
2d
asked How does one prove that $\mathbb{Z}\left[\frac{1 + \sqrt{-43}}{2}\right]$ is a unique factorization domain.
2d
asked Can we find the 18 imaginary quadratic ffields with class number 2 algorithmically?
May
23
answered Prove: $\gcd(n^a-1,n^b-1)=n^{\gcd(a,b)}-1$
May
22
answered Enumerating Bianchi circles
May
22
asked how to parameterize the ellipse $x^2 + xy + 3y^2 = 1$ with $\sin \theta$ and $\cos \theta$
May
21
answered Without using Heegner-Stark-Baker, $\mathbb{Q}(\sqrt{-11})$ has class number $1$.
May
21
answered Concatenating countably many homotopies
May
21
asked Cauchy-Ramanujan Formula $ \displaystyle \sum_{\stackrel{m \in \mathbb{Z}}{m \neq 0}} \frac{\coth m \pi}{m^{4p+3}} $
May
21
answered Visualizing Euclidean Algorithm in $\mathbb{Q}(\sqrt{-7})$ and $\mathbb{Q}(\sqrt{-11})$ with Convex Geometry
May
21
asked Visualizing Euclidean Algorithm in $\mathbb{Q}(\sqrt{-7})$ and $\mathbb{Q}(\sqrt{-11})$ with Convex Geometry
May
15
asked Show that $\int_{-T}^T |\zeta(\frac{1}{2} + it)|^4 \, dt \sim T \log(T)^4 $
May
12
answered Is a “network topology'” a topological space?
May
11
asked proof that $\frac{x^p - 1}{x-1} = 1 + x + \dots + x^{p-1}$ is irreducible
May
10
answered Integral relations in Fricke and Klein
May
5
answered Examples of non-obvious isomorphisms following from the first isomorphism theorem
May
2
asked Which pairs of matrices generate $SL(2, \mathbb{Z})$?
Apr
29
asked A combinatorial way to understand $\sum \log^2 n $
Apr
29
answered A proof of Stirling's Formula