Isaac ben Sheshet

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Jewish philosophy
Hellenistic Positions: Hasmonean Sadducean Pharisee Boethusian People: Aristobulus of Alexandria Philo of Alexandria
Medieval Influenced by: Brethren of Purity Ibn Bajjah (Avempace) Ismaili philosophy Jewish Kalam Kabbalah Rabbinic Judaism Spanish and European: Hasdai ibn Shaprut Ibn Gabirol Abraham bar Hiyya Bahya ibn Paquda Judah Halevi Abraham ibn Daud Joseph ibn Tzaddik Abraham ibn Ezra Maimonides Nachmanides Samuel ibn Tibbon Joseph ben Judah Shem-Tov ibn Falaquera Gersonides Moses of Narbonne Isaac ben Sheshet Hasdai Crescas Joseph Albo Elia del Medigo Judah Minz Isaac Abarbanel Judah Leon Abravanel Yemenite: Natan'el al-Fayyumi Mansur ibn Sulayman al-Ghamari Other: Isaac Israeli Saadia Gaon al-Mukkamas Hibat Allah Abu'l-Barakat Ibn Kammuna Positions: Maimonidean / Anti-Maimonidean Kabbalist Karaism Talmudic Tosafist
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Isaac ben Sheshet Perfet (or Barfat) (1326–1408) (Hebrew: יצחק בן ששת) was a Spanish Talmudic authority, also known by his acronym, Rivash (ריב"ש‎). He was born at Valencia and settled early in life at Barcelona, where he studied at the school of Nissim of Gerona.