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Yang Hui

 Yang Hui was a famous mathematician. He lived in the 13th century. One of the first person he was expired by was another mathematician named, Qin Jiushao. The math that was attributed to Yang Hui was square roots and cubic roots. But the man that invented the square roots and cubic roots was, Jia Xain. And Yang acknowledged that.

Around 1275 AD, Yang finally had two published mathematical books. In his book known as Ruji Shisuo or Piling-up Powers and Unlocking Coefficients, which is known through his contemporary mathematician, Lui Ruxie. Yang was also known for his ability to manipulate decimals fractions. Yang wrote an arrangement of natural numbers around concentric and non concentric circles. (http://en.wikipedia.org/wiki/Yang_Hui)  Babylonians 

The Babylonians lived in 1690's BC and lived in Babylon which is now modern day Iraq. The climate in this area is hot and dry and has very little rainfall. But the land in this area was a fertile oasis due to the constant flow of water brought by the two rivers. One of the most famous of all Babylonian's was Hammurabi who ruled all of Babylon for 43 years was only 55 years old when he died of what is to believe "old age".

The Babylonian's culture valued mathematics and literature. The Babylonians were intelligent people who made large advances in the techniques of agriculture and science. The Babylonians were also very skilled with arts and crafts. They were also very talented in making buildings. They made beautiful temples and public buildings. http://www.mnsu.edu/emuseum/cultural/oldworld/middle_east/babylonians.html