Immanuel Bonfils

Immanuel Bonfils Mathematician


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Immanuel Bonfils is a member of the following lists: Jewish writers, 14th-century Latin writers and 1300 births.


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Birthday 30th November, 1299
Died 1377
Occupation Mathematician

Immanuel ben Jacob Bonfils (c. 1300 – 1377) was a French-Jewish mathematician and astronomer in medieval times who flourished from 1340 to 1377, a rabbi who was a pioneer of exponential calculus and is credited with inventing the system of decimal fractions. He taught astronomy and mathematics in Orange and later lived in Tarascon, both towns in the Holy Roman Empire that are now part of modern-day France. Bonfils studied the works of Gersonides (Levi ben Gershom), the father of modern trigonometry, and Al-Battani and even taught at the academy founded by Gersonides in Orange.

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