## Logic

**Logic** (from the Greek λογική, *logikē*) refers to both the study of modes of reasoning (which are valid and which are fallacious) and the use of valid reasoning. In the latter sense, logic is used in most intellectual activities, including philosophy and science, but in the first sense, is primarily studied in the disciplines of philosophy, mathematics, semantics, and computer science. It examines general forms that arguments may take. In mathematics, it is the study of valid inferences within some formal language. Logic is also studied in argumentation theory.

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### Some articles on logic:

**Logic**

... One well-known system of paraconsistent

**logic**is the simple system known as LP ("

**Logic**of Paradox"), first proposed by the Argentinian logician F ... tautologies) of LP are precisely those of classical propositional

**logic**... LP and classical

**logic**differ only in the inferences they deem valid.) Relaxing the requirement that every formula be either true or false yields the weaker paraconsistent

**logic**commonly known as FDE ("First-Degree ...

**Logic**

... In

**logic**, two mutually exclusive propositions are propositions that logically cannot be true at the same time ...

**Logic**- Applications

... Paraconsistent

**logic**has been applied as a means of managing inconsistency in numerous domains, including Semantics ... Paraconsistent

**logic**has been proposed as means of providing a simple and intuitive formal account of truth that does not fall prey to paradoxes such as the Liar ... Some believe that paraconsistent

**logic**has significant ramifications with respect to the significance of Russell's paradox and Gödel's incompleteness theorems ...

... maximum flexibility in the code and resources dedicated to the presentation

**logic**... The distinction between "presentation" (front end) and "business

**logic**" (infrastructure) is usually an important one, because the presentation source code language may differ ...

**Logic**- Notable Figures

... Notable figures in the history and/or modern development of paraconsistent

**logic**include Alan Ross Anderson (USA, 1925–1973) ... One of the founders of relevance

**logic**, a kind of paraconsistent

**logic**... Worked with Anderson on relevance

**logic**...

### More definitions of "logic":

- (
*noun*): The branch of philosophy that analyzes inference.

- (
*noun*): The principles that guide reasoning within a given field or situation.

Example:*"Economic logic requires it"; "by the logic of war"*

- (
*noun*): A system of reasoning.

Synonyms: logical system, system of logic

### Famous quotes containing the word logic:

“There is no morality by instinct.... There is no social salvation—in the end—without taking thought; without mastery of *logic* and application of *logic* to human experience.”

—Katharine Fullerton Gerould (1879–1944)

“The usefulness of madmen is famous: they demonstrate society’s *logic* flagrantly carried out down to its last scrimshaw scrap.”

—Cynthia Ozick (b. 1928)

“The *logic* of the world is prior to all truth and falsehood.”

—Ludwig Wittgenstein (1889–1951)