Top network posts

• 15 Are logarithms of prime numbers quadratically independent over $\mathbb Q$?
• 13 Exponential integral: something is wrong.
• 12 Primes $p_i$ such that $\sin(\frac{\pi}{n})\sin(\frac{p_1\pi}{n})\cdots\sin(\frac{p_k\pi}{n})$ is rational
• 10 On the roots of the polynomial $(z-\frac12)^{2n}+(z+\frac12)^{2n}+1$
• 10 When does the game end?
• 10 A nice combinatorial identity: $\sum_{k=1}^{n-1}\frac{\binom{k-1}{n-k-1}+\binom{k}{n-k-1}}{\binom nk}=1$
• 10 Evaluate $\sum_{n,k} \binom{n}{k}^{-1} $
• View more network posts →