Mathematician:William of Ockham

English philosopher-monk whose main contribution towards philosophical thought was what is now known as Occam's Razor.

Also wrote down (in words) what are now known as De Morgan's laws.

Nationality
English

History

 * Born: c. 1288, Ockham, England
 * Died: 1347 or 1348, Munich, Holy Roman Empire (now Germany)

Theorems and Definitions

 * Occam's Razor

Books and Papers

 * Philosophical writings
 * c. 1323: Summa Logicae (Sum of Logic)
 * Before 1327: Quaestiones in octo libros physicorum
 * Before 1327: Summulae in octo libros physicorum
 * Before 1327: Quodlibeta septem
 * Expositio aurea super artem veterem Aristotelis, 1323.
 * 1323: Major summa logices
 * Quaestiones in quattuor libros sententiarum
 * Centilogium theologicum


 * Theological writings
 * Questiones earumque decisiones
 * Quodlibeta septem
 * Centilogium
 * De sacramento altaris and De corpore christi
 * Tractatus de sacramento allans


 * Political writings
 * 1332: Opus nonaginta dierum
 * 1332: Dialogus
 * 1333-34: Tractatus de dogmatibus Johannis XXII papae
 * 1334: Epistola ad fratres minores
 * 1344: Super potestate summi pontificis octo quaestionum decisiones
 * De jurisdictione imperatoris in causis matrimonialibus
 * 1346: Breviloquium de potestate tyrannica
 * 1348: De imperatorum et pontifcum potestate (also known as Defensorium)