Top network posts

• 56 Fun Geometric Series Puzzle
• 37 Are most rational quintics unsolvable?
• 32 Why is $\sum_{n=-\infty}^{\infty}\exp(-(x+n)^2)$ "almost" constant?
• 29 Find a conformal map from semi-disc onto unit disc
• 25 What is the surface area of the 3-dimensional elliptope?
• 25 Minimal value of $\sum_{1\leq i<j\leq 2014}a_ia_j$ where $a_i=\pm1$
• 23 A certain “harmonic” sum
• View more network posts →