1236-1312 French Jewish mathematician and astronomer who translated several key works into Hebrew, and wrote a number of mathematical and astronomical treatises. Among the texts Jacob translated from Arabic were Euclid's (c. 325-c. 250 B.C.)...

Jacob ben Machir ibn Tibbon, of the Ibn Tibbon family. Provençal, Jewish astronomer; born, probably at Marseilles, about 1236; died at Montpellier about 1304. He was a grandson of Samuel ben Judah ibn Tibbon. His Provençal name was Don Profiat Tibbon;...