logical equivalence

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• Logical equivalence — In logic, statements p and q are logically equivalent if they have the same logical content.Syntactically, p and q are equivalent if each can be proved from the other. Semantically, p and q are equivalent if they have the same truth value in… …   Wikipedia

• logical equivalence — noun see equivalence …   Useful english dictionary

• Equivalence — or equivalent may refer to: In chemistry: Equivalent (chemistry) Equivalence point Equivalent weight In computing: Turing equivalence (theory of computation) In ethics: Moral equivalence In history: The Equivalent, a sum paid from England to… …   Wikipedia

• Logical equivalent — may refer to: *logical equivalence *exclusive nor, a logic gate …   Wikipedia

• 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

• Equivalence relation — In mathematics, an equivalence relation is a binary relation between two elements of a set which groups them together as being equivalent in some way. Let a , b , and c be arbitrary elements of some set X . Then a b or a ≡ b denotes that a is… …   Wikipedia

• Logical biconditional — In logic and mathematics, the logical biconditional (sometimes known as the material biconditional) is the logical connective of two statements asserting p if and only if q , where q is a hypothesis (or antecedent) and p is a conclusion (or… …   Wikipedia

• Logical equality — For the corresponding concept in combinational logic, see XNOR gate. XNOR Logic Gate Symbol Logical equality is a logical operator that corresponds to equality in Boolean algebra and to the logical biconditional in propositional calculus. It… …   Wikipedia

• Logical implication — In logic and mathematics, logical implication is a logical relation that holds between a set T of formulae and a formula B when every model (or interpretation or valuation) of T is also a model of B . In symbols,# T models B, # T Rightarrow B # T …   Wikipedia

• logical relation — ▪ logic       those relations between the elements of discourse or thought that constitute its rationality, in the sense either of (1) reasonableness or (2) intelligibility. A statement may be perfectly intelligible without being based upon any… …   Universalium

• equivalence — /i kwiv euh leuhns/ or, for 3, /ee kweuh vay leuhns/, n. 1. the state or fact of being equivalent; equality in value, force, significance, etc. 2. an instance of this; an equivalent. 3. Chem. the quality of having equal valence. 4. Logic, Math. a …   Universalium