Chu
# Chu Shih-Chieh

### Born: about 1270
in China

Died: about 1330

**Chu Shih-Chieh** wrote two important texts in 1299 and 1303. The first Introduction to Mathematical Studies was intended for beginners. The second book marks the peak of Chinese mathematics and it was a long time before further progress was made in China. The book contains a transformation method for solving equations (used up to degree 14) rediscovered by Horner and Ruffini. It also contains Pascal's triangle (discovered in China earlier) and gives formulas for 1+2+3+4+..., 1+3+6+10+..., 1+4+10+20..., 1+5+15+35+..., 1+6+21+56+... .
**References (2 books/articles)**

JOC/EFR December 1996