universal quantifier symbol

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• universal quantifier — noun The operator, represented by the symbol ∀, used in predicate calculus to indicate that a predicate is true for all members of a specified set. Some verbal equivalents are for each or for every …   Wiktionary

• Universal quantification — In predicate logic, universal quantification is an attempt to formalize the notion that something (a logical predicate) is true for everything , or every relevant thing.The resulting statement is a universally quantified statement, and we have… …   Wikipedia

• existential quantifier — noun The operator, represented by the symbol ∃, used in predicate calculus to indicate that a predicate is true for at least one member of a specified set. Some verbal equivalents are there exists or there is . See Also: universal quantifier …   Wiktionary

• 2channel Shift JIS art — >>1 san>>1 san (>>1さん, ichisan ) is a common Shift JIS art character on the popular Japanese BBS 2channel ( 2ch for short), standing in for the user who started a given thread. He is commonly characterized as a clueless newbie who rarely thinks… …   Wikipedia

• Quantification — has two distinct meanings.In mathematics and empirical science, it refers to human acts, known as counting and measuring that map human sense observations and experiences into members of some set of numbers. Quantification in this sense is… …   Wikipedia

• First-order logic — is a formal logical system used in mathematics, philosophy, linguistics, and computer science. It goes by many names, including: first order predicate calculus, the lower predicate calculus, quantification theory, and predicate logic (a less… …   Wikipedia

• Method of analytic tableaux — A graphical representation of a partially built propositional tableau In proof theory, the semantic tableau (or truth tree) is a decision procedure for sentential and related logics, and a proof procedure for formulas of first order logic. The… …   Wikipedia

• formal logic — the branch of logic concerned exclusively with the principles of deductive reasoning and with the form rather than the content of propositions. [1855 60] * * * Introduction       the abstract study of propositions, statements, or assertively used …   Universalium

• logic, history of — Introduction       the history of the discipline from its origins among the ancient Greeks to the present time. Origins of logic in the West Precursors of ancient logic       There was a medieval tradition according to which the Greek philosopher …   Universalium

• Original proof of Gödel's completeness theorem — The proof of Gödel s completeness theorem given by Kurt Gödel in his doctoral dissertation of 1929 (and a rewritten version of the dissertation, published as an article in 1930) is not easy to read today; it uses concepts and formalism that are… …   Wikipedia

• Singular they — is a popular, non technical expression for uses of the pronoun they (and its inflected forms) when plurality is not required by the context. The Chicago Manual of Style notes: On the one hand, it is unacceptable to a great many reasonable readers …   Wikipedia