 insolubles [= insolubilia] |  medieval philosophy |  medieval philosophy: literary forms of |  modality: medieval theories of |  Nicholas of Autrecourt [de Altricuria, Autricuria, Ultricuria, Autricort] |  Ockham [Occam], William |  Peter of Spain [= Petrus Hispanus] |  sophismata [= sophisms] |  syllogism: medieval theories of |  terms, properties of: medieval theories of |  universals: the medieval problem of 