principle of noncontradiction

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• Principle of explosion — The principle of explosion is the law of classical logic and a few other systems (e.g., intuitionistic logic) according to which anything follows from a contradiction i.e., once you have asserted a contradiction, you can infer any proposition, or …   Wikipedia

• Principle of bivalence — In logic, the semantic principle of bivalence states that every proposition takes exactly one of two truth values (e.g. truth or falsehood ). The laws of bivalence, excluded middle, and non contradiction are related, but they refer to the… …   Wikipedia

• Law of noncontradiction — This article uses forms of logical notation. For a concise description of the symbols used in this notation, see List of logic symbols. In classical logic, the law of non contradiction (LNC) (or the principle of non contradiction (PNC), or the… …   Wikipedia

• First principle — First Principles is also the title of a work by Herbert Spencer. In philosophy, a first principle is a basic, foundational proposition or assumption that cannot be deduced from any other proposition or assumption. In mathematics, first principles …   Wikipedia

• metaphysics — /met euh fiz iks/, n. (used with a sing. v.) 1. the branch of philosophy that treats of first principles, includes ontology and cosmology, and is intimately connected with epistemology. 2. philosophy, esp. in its more abstruse branches. 3. the… …   Universalium

• John F. Wippel — Monseigneur John F. Wippel, est né à Pomeroy, dans l Ohio (USA). Il est prêtre du diocèse de Steubenville et un expert de renommée mondiale de la philosophie médiévale. Il a reçu ses diplômes bachelor et master en philosophie, en même temps qu il …   Wikipédia en Français

• John F Wippel — John F. Wippel Monseigneur John F. Wippel, est né à Pomeroy, dans l Ohio (USA). Il est prêtre du Diocèse de Steubenville et un expert de renommée mondiale de la philosophie médiévale. Il a reçu ses diplômes bachelor et master en philosophie, en… …   Wikipédia en Français

• Law of thought — The laws of thought are fundamental logical rules, with a long tradition in the history of philosophy, which collectively prescribe how a rational mind must think. To break any of the laws of thought (for example, to contradict oneself) is to be… …   Wikipedia

• Classical logic — identifies a class of formal logics that have been most intensively studied and most widely used. The class is sometimes called standard logic as well.[1][2] They are characterised by a number of properties:[3] Law of the excluded middle and… …   Wikipedia

• Ockham’s world and future — Arthur Gibson PHILOSOPHICAL BIOGRAPHY Ockham was born in about 1285, certainly before 1290, probably in the village of Ockham, Surrey, near London. If his epitaph is accurate, he died on 10 April 1347. Yet Conrad of Megenberg, when writing to… …   History of philosophy

• Leibniz (from) to Kant — From Leibniz to Kant Lewis White Beck INTRODUCTION Had Kant not lived, German philosophy between the death of Leibniz in 1716 and the end of the eighteenth century would have little interest for us, and would remain largely unknown. In Germany… …   History of philosophy