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 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), a value that, unlike a variable, cannot be reassociated with a different value * Logical constant, a symbol in symbolic logic that has the same meaning in all models, such as the symbol "=" for "equals"

People

* Constant (given name) * Constant (surname) * John, Elector of Saxony (1468–1532), known as John the Constant * Constant Nieuwenhuys (1920-2005), better known as Constant

Places

* Constant, Barbados, 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