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Classical logic

Definition

Classical logic or Frege–Russell logic is the intensively studied and most widely used class of deductive logic. Classical logic has had much influence on analytic philosophy.

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A. N. 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Sheffer Hereditary set Higher-order logic Hilbert's axioms Hilbert system History of logic History of mathematical logic Hugh MacColl Hypothetical syllogism Idempotency of entailment Image (mathematics)Inaccessible cardinal Independence (mathematical logic)Inference Infinite-valued logic Infinite set Information theory Inhabited set Injective function Interpretation (logic)Interpretation (model theory)Interpretation function Intersection (set theory)Isomorphism Jan Łukasiewicz John Venn Kolmogorov complexity Kripke's theory of truth Kripke–Platek set theory Kurt Gödel L. T. F. 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