Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
See M. Korkmaz' paper For the mapping class group. For the $SL(n, \mathbb{Z})$ see this question.this question.
See M. Korkmaz' paper For the mapping class group. For the $SL(n, \mathbb{Z})$ see this question.