Frege's propositional calculus — In mathematical logic Frege s propositional calculus was the first axiomatization of propositional calculus. It was invented by Gottlob Frege, who also invented predicate calculus, in 1879 as part of his second order predicate calculus (although… … Wikipedia
Theorem — The Pythagorean theorem has at least 370 known proofs[1] In mathematics, a theorem is a statement that has been proven on the basis of previously established statements, such as other theorems, and previously accepted statements … Wikipedia
Gottlob Frege — Infobox Philosopher region = Western Philosophy era = 19th century philosophy, color = #B0C4DE image caption = Friedrich Ludwig Gottlob Frege name = Friedrich Ludwig Gottlob Frege birth = November 8, 1848 death = 26 July, 1925 school tradition =… … Wikipedia
Gödel's completeness theorem — is a fundamental theorem in mathematical logic that establishes a correspondence between semantic truth and syntactic provability in first order logic. It was first proved by Kurt Gödel in 1929. A first order formula is called logically valid if… … Wikipedia
Löwenheim–Skolem theorem — In mathematical logic, the Löwenheim–Skolem theorem, named for Leopold Löwenheim and Thoralf Skolem, states that if a countable first order theory has an infinite model, then for every infinite cardinal number κ it has a model of size κ. The… … Wikipedia
Proof sketch for Gödel's first incompleteness theorem — This article gives a sketch of a proof of Gödel s first incompleteness theorem. This theorem applies to any formal theory that satisfies certain technical hypotheses which are discussed as needed during the sketch. We will assume for the… … Wikipedia
Freges Theorem — ist eine der Grundlagen des Neo Logizismus. Gottlob Frege bewies 1884 in Die Grundlagen der Arithmetik informal, dass Peano Axiome der Arithmetik aus Humes Prinzip mittels einer Logik zweiter Stufe abgeleitet werden können. Ein formaler Beweis… … Deutsch Wikipedia
George Boolos — Infobox Person name = George Boolos birth date = birth date|1940|9|4|mf=y birth place = New York, New York, U.S. death date = death date and age|1996|5|27|1940|9|4|mf=y death place = Cambridge, Massachusetts, U.S.George Stephen Boolos (September… … Wikipedia
George Boolos — George Stephen Boolos (4 de septiembre de 1940, Nueva York – 27 de mayo de 1996) fue un filósofo y estudioso de lógica matemática que enseñó en el Massachusetts Institute of Technology. Contenido 1 Vida 2 Trabajo 3 Véase también … Wikipedia Español
List of philosophy topics (D-H) — DDaDai Zhen Pierre d Ailly Jean Le Rond d Alembert John Damascene Damascius John of Damascus Peter Damian Danish philosophy Dante Alighieri Arthur Danto Arthur C. Danto Arthur Coleman Danto dao Daodejing Daoism Daoist philosophy Charles Darwin… … Wikipedia
