# Archive for January, 2011

## Friday math movie: Hans Rosling’s 200 Countries, 200 Years, 4 Minutes

## IntMath Newsletter: Cultural math, visual stats, matrices and persistence

In this Newsletter:

1. Happy new multicultural year

2. Inverse of a matrix by Gauss-Jordan elimination

3. Who lives there? Visual stats and social engineering

4. Twitter follower semi-log graphs

5. 500 billion words: visual stats give us cultural insights

6. Final thought: persistence

## Full archive

See the blog sitemap for all previous articles.