
alKhowarizmi Abu Abdullah
Muhammad bin Musa alKhwarizmi (stands for the person from Khwarizm) was a
Persian scientist, mathematician, astronomer, and astrologer. He was born in
780 A.D. and died around 840 A.D. He is often cited as "the father of
algebra", which was named after a part of the title of his book, Hisab
aljabr w'almuqabala, along with the algorism number system. Although he wrote
his works in Arabic, there are various guesses at his native language. Soviet postage stamp commemorating his 1200^{th} anniversary He made major
contributions to the fields of algebra, trigonometry, and geography. He
corrected Ptolemy’s geographical maps as
regards to Africa and the Middle East and published the book Kitab His books made
a significant contribution to the advancement of mathematics (solving linear
and quadratic equations including geometric principles for completing the
square) in Reference
for the contents above and further information of Brahmagupta’s live: http://en.wikipedia.org/wiki/AlKhowarizmi http://wwwgap.dcs.stand.ac.uk/~history/Mathematicians/AlKhwarizmi.html Ziegenbalg J.: Algorithmen, von
Hammurapi bis Gödel; Spektrum Akademischer Verlag 
