# What is logic?

• (noun): Reasoned and reasonable judgment.
Example: "It made a certain kind of logic"

## 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.

### Some articles on logic:

A Simple Paraconsistent 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 ...
Mutually Exclusive Events - Logic
... In logic, two mutually exclusive propositions are propositions that logically cannot be true at the same time ...
Paraconsistent 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 ...
Web Template - Template Uses - Flexible Presentation
... 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 ...
Paraconsistent 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"

### 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)