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Abraham Bar Hiyya Ha-nasi




He is remembered in the world of mathematics for his role in the dissemination of the Quadratic Equation . Bar Hiyya wrote several scientific works in the fields of Astronomy , Mathematics, land surveying and Calendar calculations.

He also wrote two religious works in the field of Judaism and the Hebrew Bible : ''Hegyon ha-Nefesh'' ("Contemplation of {Link without Title} Soul") on repentance and ''Megillat ha-Megalleh'' on the redemption of the Jewish people. Even these religious works contain scientific and philosophical speculation.

Bar Hiyya wrote all his works in Hebrew , not in Judaeo-Arabic of the earlier Jewish scientific literature, which made him a pioneer in the use of the Hebrew Language for scientific purposes. He also co-operated with Plato Of Tivoli in the translation of scientific works from Arabic into Latin .

His ''Megillat ha-Megalleh'' ("Scroll of the Revealer") was also Astrological in nature. It claimed to forecast the Messianic future.


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