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-c ...

, a non-varying value *

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

, 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 is generally believed to be both universal in nature and have constant value in time. It is contrasted with a mathematical constant, ...

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

Constant (computer programming) In computer programming, a constant is a value that should not be altered by the program during normal execution, i.e., the value is ''constant''. When associated with an identifier, a constant is said to be "named," although the terms "constant" ...

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

Logical constant In logic, a logical constant 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 equality predicate (us ...

, 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 o ...

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 Consta ...

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

(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 Constant is a populated place in the parish of Saint George, Barbados. See also * List of cities, towns and villages in Barbados This is a list of cities, towns and villages in Barbados. Barbados is a sovereign island country in the Lesser Anti ...

, a populated place

Arts and entertainment

* "

The Constant "The Constant" is the fifth episode of the fourth season of the American Broadcasting Company's (ABC) serial drama television series ''Lost'', and the 77th episode overall. It was broadcast on February 28, 2008, on ABC in the United States and ...

", 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. (2004) ''Nostalgia For The Future'' Constants was originally formed as a three piece in 2003, consisting of Will Benoit, Ben Fowlie, and Duncan Rich. T ...

, an American rock band {{disambiguation