symbol of negation

См. также в других словарях:

• Negation — Verneinung; Dementierung * * * Ne|ga|ti|on 〈f. 20〉 1. Verneinung, Ablehnung; Ggs Affirmation, Position (7) 2. 〈Gramm.〉 Verneinungswort; → Lexikon der Sprachlehre [<lat. negatio] * * * Ne|ga|ti|on, die; , en [lat. negatio, zu: negare, ↑… …   Universal-Lexikon

• Prime (symbol) — This article is about the symbol. For the type of number, see Prime number. For other uses, see Prime (disambiguation). ′ Prime Punc …   Wikipedia

• X (disambiguation) — X is the twenty fourth letter of the Latin alphabet.X may also refer to:Language*Chi (letter), the twenty second letter of the Greek alphabet, often used to abbreviate Christ *Kha, a letter in the Cyrillic alphabet *Ḫāʼ, a letter in the Arabic… …   Wikipedia

• Transposition (logic) — In the methods of deductive reasoning in classical logic, transposition is the rule of inference that permits one to infer from the truth of A implies B the truth of Not B implies not A , and conversely . [Brody, Bobuch A. Glossary of Logical… …   Wikipedia

• tilde — /til deuh/, n. 1. a wavy line dicritic placed over an n, as in Spanish mañana, to indicate a palatal nasal sound or over a vowel, as in Portuquese são, to indicate nasalization. 2. See swung dash. 3. Math. a wavy horizontal line symbol indicating …   Universalium

• 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

• Logical connective — This article is about connectives in classical logic. For connectors in natural languages, see discourse connective. For connectives and operators in other logics, see logical constant. For other logical symbols, see table of logic symbols. In… …   Wikipedia

• Boolean algebra (logic) — For other uses, see Boolean algebra (disambiguation). Boolean algebra (or Boolean logic) is a logical calculus of truth values, developed by George Boole in the 1840s. It resembles the algebra of real numbers, but with the numeric operations of… …   Wikipedia

• Stable model semantics — The concept of a stable model, or answer set, is used to define a declarative semantics for logic programs with negation as failure. This is one of several standard approaches to the meaning of negation in logic programming, along with program… …   Wikipedia