Adrian

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= Abraham bar Hiyya =

= = Savasorda who is also known as Abraham bar Hiyya Ha-Nasi was a Jewish Mathematitian and astronomer. He is best known today for officially writing the quadratic formula in the currently used form. He lived in Barclona, Spain and he was one of the first scientists to use Hebrew for all scientific writing.Abraham bar Hiyya was born the year of 1070 in Barcelona which is the second largest city in Spain. He died at Provence in France in the year of 1136 which is adjacent to Italy.

Abraham bar Hiyya is remembered in the world of mathematics for his duty in the dissemination of the quadratic equation. Bar Hiyya wrote various scientific works in the fields of astronomy, mathematics, land surveying and calender calculations.He also wrote two religious works in the field of Judaism and the Hebrew Bible: //Hegyon ha-Nefesh// ("Contemplation of [the] Soul") onregret and //Megillat ha-Megalleh// on the recovery of the Jewish people. Even these religious works have scientific and philosophical evidence. His //Megillat ha-Megalleh// ("Scroll of the Revealer") was also astrological in nature. It state to forecast the messianic future.Bar Hiyya wrote all his works in Hebrew, not in Judaeo-Arabic of the earlier Jewish scientific compositions, which made him a pioneer in the use of the Hebrew language for scientific purposes. He also assisted with Plato of tivoli in the conversion of scientific works from Arabic into Latin.

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Muhammad ibn musa khwarizmi

Muhammad ibn musa khwarizmi was a persian Islamic mathematician, astronomer and geographer.He was taught in the house of wisdom in baghdad, were he worked most of his life. He wrote his first book His algebra in the year of 820 on algebra linear and quadratic equations. His name was muhammad ibn musa khwarizmi.He was born in the year of 780 in khwarizm, in Ubekistan, which was then part of the native Iranian-Khwarizmian Afrigid dynasty.

To other people he was considered to be the father of algebra.He introduced the positional number system to the western world.He was one of the earliest to use zero as a place holder in positional base notation.The word algorithm comes from his name. He revised and updated ptolemys geography as well as writing many work on astronomy and astrology. 

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