Constant or The Constant may refer to:

Mathematics

Constant (mathematics) In mathematics, the word constant conveys multiple meanings. As an adjective, it refers to non-variance (i.e. unchanging with respect to some other value); as a noun, it has two different meanings: * A fixed and well-defined number or other non ...

, a non-varying value *

Mathematical constant A mathematical constant is a number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an Letter (alphabet), alphabet letter), or by mathematicians' names to facilitate using it across multiple mathem ...

, a special number that arises naturally in mathematics, such as or

Other concepts

Control variable A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout the course of the investigation. Control variables could strongly influence experimental ...

or scientific constant, in experimentation the unchanging or constant variable *

Physical constant A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that cannot be explained by a theory and therefore must be measured experimentally. It is distinct from a mathematical constant, which has a ...

, a physical quantity generally believed to be universal and unchanging *

Constant (computer programming) In computer programming, a constant is a Value (computer science), value that is not altered by the Computer program, program during normal Execution (computing), execution. When associated with an Identifier (computer languages), identifier, a co ...

, a value that, unlike a variable, cannot be reassociated with a different value *

Logical constant In logic, a logical constant or constant symbol of a language \mathcal is a symbol that has the same semantic value under every interpretation of \mathcal. Two important types of logical constants are logical connectives and quantifiers. The e ...

, a symbol in symbolic logic that has the same meaning in all models, such as the symbol "=" for "equals"

People

Constant (given name) Constant is a given name, and may refer to: * André Henri Constant van Hasselt (1806–1874), Flemish poet * André Marie Constant Duméril (1774–1860), French zoologist * Constant Chevillon (1880–1944), Grand Master of the Freemasonry Rite ...

Constant (surname) Constant is a surname. Notable people with the surname include: *Benjamin Constant (1767–1830), Swiss-born thinker, writer and French politician * Benjamin Constant (Brazil) (1836–1891), Brazilian military man and political thinker * David Cons ...

John, Elector of Saxony John (30 June 146816 August 1532), known as John the Steadfast or John the Constant (''Johann, der Beständige''), was Prince-elector, Elector of Electorate of Saxony, Saxony from 1525 until 1532 from the House of Wettin. He is notable for organ ...

(1468–1532), known as John the Constant *

Constant Nieuwenhuys Constant Anton Nieuwenhuys (21 July 1920 – 1 August 2005), better known as Constant, was a Dutch painter, sculptor, graphic artist, author and musician. Early period Constant was born in Amsterdam on 21 July 1920 as the first son of Pieter N ...

(1920-2005), better known as Constant

Places

* Constant, Barbados, a populated place

Arts and entertainment

* " The Constant", a 2008 episode of the television show ''Lost'' * ''The Constant'' (Story of the Year album) * ''The Constant'' (I Blame Coco album) *

Constants (band) Constants is an American post-rock / shoegaze band from Boston, Massachusetts, United States. History (2004) ''Nostalgia for the Future'' Constants was originally formed as a three piece in 2003, consisting of Will Benoit, Ben Fowlie, and Dunc ...

, an American rock band * "Constant pt.1 pt.2", song by Black Eyed Peas from '' Masters of the Sun Vol. 1'' {{disambiguation