Simeon ben Zemah Duran, also Tzemach Duran (1361–1444; Hebrew: שמעון בן צמח דוראן), known as Rashbatz (רשב"ץ) or Tashbatz, was a prominent Jewish scholar, rabbinic authority, and polemicist.[1] He was proficient in various fields, including philosophy, mathematics, natural sciences, astronomy, and medicine.[1] Born in Medieval Spain, he fled with his family to Algeria in the aftermath of the 1391 pogroms that devastated the Jewish community of Spain.[1] In 1408, he became the rabbinic leader of Algerian Jewry, earning widespread recognition for his legal rulings in Spain, North Africa, France, and Italy.[1]