The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a Chinese mathematician of the 13th century. Ch’in’s work The Nine Sections of Mathematics (1247) contains information on number theory and the solution of algebraic equations of the highest degree.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.