Show pagesourceOld revisionsBacklinksBack to top Share via Share via... Twitter LinkedIn Facebook Pinterest Telegram WhatsApp Yammer RedditRecent ChangesSend via e-MailPrintPermalink × This is an old revision of the document! test PlayGround highlighted download box hallo $a^2=\sigma=\begin{bmatrix} a & b\\ c & d\end{bmatrix}$ playground/playground.1627925118.txt.gz Last modified: 2021/08/02 19:25by Olaf Schnürer