Edit this pageOld revisionsBacklinksBack to top This is an old revision of the document! let's see first “play” and “ground”. ground=worldwild. that is play? <latex> \lim_{n \to \infty} \sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6} e^{i \pi} + 1 = 0 \\ </latex> playground/playground.1226418949.txt.gz Last modified: 2008-11-11 15:55by 81.188.78.24