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logic Definition

logic (läj′ik)

noun

  1. the science of correct reasoning; science which describes relationships among propositions in terms of implication, contradiction, contrariety, conversion, etc.
  2. a book dealing with this science
  3. correct reasoning; valid induction or deduction the lack of logic in his scheme
  4. way of reasoning, whether correct or incorrect to use faulty logic
  5. the system of principles underlying any art or science
  6. necessary connection or outcome, as through the working of cause and effect the logic of events
  7. the systematized interconnection of switching functions, circuits, or devices, as in electronic computers

Etymology: ME logike < OFr logique < L logica < Gr logikē (technē), logical (art) < logikos, of speaking or reasoning < logos, a word, reckoning, thought < legein, to speak, choose, read < IE base *le-, to gather > L legere, to collect, OE læce, leech

logic Synonyms

logic

n.

reasoning, dialectic, deduction, syllogism, induction, inference, course of argument, course of thought; thesis, antithesis and synthesis, chain of reasoning; see also philosophy 1, thought 1.

Branches of logic include: traditional, Aristotelian, Ramist, Ramistic, modern, epistemological, pragmatic, formal, instrumental, experimental, psychological, symbolic, mathematical, deductive, inductive, Baconian.

logic Usage Examples

Preposition: of

  • capitalism: Postmodernism, or, The Cultural Logic of Late Capitalism.

Converse of object

  • defy: This not only defies the logic of what we are taught about spirits in Church, it defies common sense.
  • warp: An intensity that completely warps normal logic and decision making.
  • apply: Forces the control to apply layout logic to all its child controls.
  • understand: I can understand the logic to what you say.

Adjective modifier

  • fuzzy: They use fuzzy logic to compute distances between features.
  • modal: In this paper, we present a new massively parallel model for modal logic.
  • propositional: Propositional Logic Define a data type to represent formulae of propositional logic.
  • temporal: Temporal logics are useful in specifying systems that change over time.
  • predicate: However many statements cannot be modeled using predicate logic.
  • intuitionistic: In Chapter 3, MJ is extended to a calculus for an intuitionistic modal logic ( due to Curry ) called Lax Logic.

Modifies a noun

  • puzzle: These popular logic puzzles from Japan are taking.. .
  • programming: All of the logic programming topics covered in LPA are needed.
  • analyzer: This can be seen on the logic analyzer picture in Fig.
  • gate: You'll have to explain logic gates to me where there's more time below.
  • circuit: When several devices are connected in series in a logic circuit these switching times become additive.
  • analyzer: Familiarity with debug tools such as oscilloscopes, logic analyzers, and in-circuit emulators.

Noun used with modifier

  • first-order: Formal description of program structure and semantics in first-order logic.
  • higher-order: Higher-order logic is now one of the standard formalisms used for verifying digital designs.
  • predicate: General remarks Informally, a prolog program is a collection of statements, in first-order predicate logic.
logic Quotes

'Contrariwise,'continued Tweedledee,'if it was so, it might be; and if it were so, it would be: but as it isn't it ain't. That's logic.'

—Dodgson

Le colonialisme ne se satisfait pas d'enserrer le peuple dans ses mailles, de vider le cerveau colonise¤   de toute forme et de tout contenu. Par une sorte de perversion de la logique, il s'oriente vers le passe¤   du peuple opprime¤  , le distort, le de¤  figure, l'ane¤  antit. Colonialismisnot satisfiedmerely with holding a people in its grip and emptying the native's brain of all form and content. Bya kind of perverted logic, it turns to the past of the oppressed people, and distorts, disfigures and destroys it.

—Fanon, Frantz Omar

Aconspiracy iseverything thatordinary lifeisnot.It'sthe inside game, cold, sure, undistracted, forever closed off to us.We are the flawed ones, the innocents, trying to make some rough sense of the daily jostle.Conspirators have a logic and a daring beyond our reach.

—DeLillo, Don

Her logic was a combination of half-truths and cliche¤  s, her worldviewa compound of misconceptions deriving from a history of our nation as written from the perspective of a subway tunnel.

—Toole,John Kennedy

To write music is to raise a ladder without a wall to lean it against. There is no scaffolding: the building under construction is held in balance only by the miracle of a kind of internal logic, an innate sense of proportion.

—Honegger, Arthur

Historiesmakemenwise; poets, witty; themathematics, subtle; natural philosophy, deep; moral, grave; logic and rhetoric, able to contend.

—Bacon, Francis,Viscount St Albans

Logic doesn't apply to the real world. Mishima

—Minsky, Marvin Lee

Crime is common. Logic is rare. Therefore it is upon the logic rather than upon the crime that you should dwell.

—Doyle, SirArthur Conan

Countless works in the social sciences reveal the inability of their authors to bear in mind the crucial difference between what may properly be called the logic of discovery and the logic of demonstration. The second isproperlysubjectto rules and prescriptions; the first isn't.

—Nisbet, Robert

Is, to dispute well, logic's chiefest end? Affords this art no greater miracle?

—Marlowe, Christopher