A double is a

look-alike A look-alike, double, or doppelgänger is a person who bears a strong physical resemblance to another person, excluding cases like twins and other instances of family resemblance. Some look-alikes have been notable individuals in their own right ...

doppelgänger A doppelgänger (), a compound noun formed by combining the two nouns (double) and (walker or goer) (), doppelgaenger or doppelganger is a biologically unrelated look-alike, or a double, of a living person. In fiction and mythology, a doppelg ...

; one person or being that resembles another. Double, The Double or Dubble may also refer to:

Film and television

* Double (filmmaking), someone who substitutes for the credited actor of a character * ''The Double'' (1934 film), a German crime comedy film * ''The Double'' (1971 film), an Italian film * ''The Double'' (2011 film), a spy thriller film * ''The Double'' (2013 film), a film based on the Dostoevsky novella * '' Kamen Rider Double'', a 2009–10 Japanese television series **

Kamen Rider Double (character) , is a 2009-2010 Japanese tokusatsu drama, the eleventh series in the Heisei period run of the Kamen Rider Series and the twentieth overall. It premiered following the finale of ''Kamen Rider Decade'' on September 6, 2009, and aired alongside '' S ...

, the protagonist in a Japanese television series of the same name

Food and drink

Doppio Doppio espresso () is a double shot which is extracted using double the amount of ground coffee in a larger-sized portafilter basket. This results in of drink, double the amount of a single shot espresso. ''Doppio'' is Italian multiplier, mea ...

, a double shot of espresso * Dubbel, a strong Belgian Trappist beer or, more generally, a strong brown ale * A drink order of two shots of hard liquor in one glass * A "double decker", a

hamburger A hamburger, or simply burger, is a food consisting of fillings—usually a patty of ground meat, typically beef—placed inside a sliced bun or bread roll. Hamburgers are often served with cheese, lettuce, tomato, onion, pickles, bacon, ...

with two patties in a single bun

Games

* Double, action in games whereby a competitor raises the stakes ** , in contract bridge **

Doubling cube Backgammon is a two-player board game played with counters and dice on tables boards. It is the most widespread Western member of the large family of tables games, whose ancestors date back nearly 5,000 years to the regions of Mesopotamia and P ...

, in backgammon * Double, villain in the video game '' Mega Man X4'' * A kart racing game '' Mario Kart: Double Dash'' * An arcade action game '' Double Dragon''

Literature

* ''The Double'' (Dostoevsky novel), an 1846 novella by Fyodor Dostoevsky * ''The Double'' (Saramago novel), a 2002 novel by José Saramago * ''Double'' (manga), a 2019 manga series by Ayako Noda * Andrew Dubble, the primary character in the ''

Andrew Lost ''Andrew Lost'' is a series of children's science fiction adventure novels written by J. C. Greenburg and published by Random House from 2002 to 2008. It features a boy inventor named Andrew Dubble whose inventions rarely work the way he expect ...

'' children's novels

Mathematics and computing

Multiplication Multiplication (often denoted by the Multiplication sign, cross symbol , by the mid-line #Notation and terminology, dot operator , by juxtaposition, or, on computers, by an asterisk ) is one of the four Elementary arithmetic, elementary Op ...

by 2 * Double precision, a floating-point representation of numbers that is typically 64 bits in length * A

split-complex number In algebra, a split complex number (or hyperbolic number, also perplex number, double number) has two real number components and , and is written z=x+yj, where j^2=1. The ''conjugate'' of is z^*=x-yj. Since j^2=1, the product of a number wi ...

of the form

x+yj

, where

j^2=+1

* A 2-

tuple In mathematics, a tuple is a finite ordered list (sequence) of elements. An -tuple is a sequence (or ordered list) of elements, where is a non-negative integer. There is only one 0-tuple, referred to as ''the empty tuple''. An -tuple is defi ...

, or ordered list of two elements, commonly called an

ordered pair In mathematics, an ordered pair (''a'', ''b'') is a pair of objects. The order in which the objects appear in the pair is significant: the ordered pair (''a'', ''b'') is different from the ordered pair (''b'', ''a'') unless ''a'' = ''b''. (In con ...

, denoted

(a,b)

Double (manifold) In the subject of manifold theory in mathematics, if M is a manifold with boundary, its double is obtained by gluing two copies of M together along their common boundary. Precisely, the double is M \times \ / \sim where (x,0) \sim (x,1) for all x ...

, in topology

Music

Double album A double album (or double record) is an audio album that spans two units of the primary medium in which it is sold, typically either records or compact disc. A double album is usually, though not always, released as such because the recording i ...

, audio album spanning two units of the primary medium in which it is sold, typically records and CDs *

Doubling (voicing) In music theory, voicing refers to two closely related concepts: # How a musician or group distributes, or spaces, notes and chords on one or more instruments # The simultaneous vertical placement of notes in relation to each other; this rel ...

, a kind of musical voicing *

Double variation The double variation (also known as alternating variations) is a musical form used in classical music. It is a type of theme and variations that employs two themes. In a double variation set, a first theme (to be called A here) is followed by a ...

, a variation form in music *

Pasodoble Pasodoble ( Spanish: ''double step'') is a fast-paced Spanish military march used by infantry troops. Its speed allowed troops to give 120 steps per minute (double the average of a regular unit, hence its name). This military march gave rise ...

, a traditional couple's dance from Spain *

Double (singer) Double is the stage name for Japanese R&B singer (born March 14, 1975). Double used to be the name for the two member R&B group consisting of Takako and her sister Sachiko (1973 - 1999). After the death of Sachiko, Takako started her solo career ...

(born 1975), Japanese R&B singer *

Double (band) Double was a Swiss music duo best known for their hit single " The Captain of Her Heart". Biography The duo was formed in 1983 in Zürich, Switzerland, by Felix Haug (drums and keyboards) and Kurt Maloo (guitar and vocals) out of the trio P ...

, Swiss pop duo that had their biggest hit in 1986 with "Captain of Her Heart" * ''Double'' (Roch Voisine album), a 1990 album by Roch Voisine * ''Double'' (Zhao Wei album), a 2005 album by Zhao Wei * "Double" (BoA song), 2003 * "The Double", an instrumental by Clint Mansell from the ''Black Swan''

soundtrack A soundtrack is recorded music accompanying and synchronised to the images of a motion picture, drama, book, television program, radio program, or video game; a commercially released soundtrack album of music as featured in the soundtrac ...

(2010) * The Double Violin Concerto (Bach) in D minor, BWV 1043, commonly referred to as "The Double" among violinists

People

* Baron Emile Double (1869–1938), vigneron who established the vineyard at Château de Beaupré * François-Joseph Double (1776–1842), French physician * Marie-Louise Double de Saint-Lambert (1891–1974), French philanthropist later known as Countess Lily Pastré * Steve Double (born 1966), British Conservative Party politician, Member of Parliament (MP) for St Austell and Newquay since 2015

Places

* Double (lunar crater), in Mare Tranquillitatis * Double Lake, a lake in Minnesota, US

Sports

Double (association football) The Double, in association football, is the achievement of winning a country's top tier division and its primary cup competition in the same season. The lists in this article examine this definition of a double, while derivative sections examin ...

, the act of a winning a division and primary cup competition in the same season *

Double (baseball) In baseball, a double is the act of a batter striking the pitched ball and safely reaching second base without being called out by the umpire, without the benefit of a fielder's misplay (see error) or another runner being put out on a field ...

, a two-base hit in baseball **

The Double (Seattle Mariners) The Double was a double hit by the Seattle Mariners' Edgar Martínez in Game 5 of Major League Baseball's 1995 American League Division Series on October 8, 1995. Trailing by one run in the bottom half of the 11th inning, with Joey Cora on third ...

, a specific instance of the above that occurred during the 1995 Major League Baseball season *

Double (cricket) A cricketer is said to achieve the double if he scores a thousand or more runs and also takes a hundred or more wickets in first-class matches during the course of a single season. The feat is extremely rare outside England because of the small ...

, the feat of scoring a thousand first-class runs and taking a hundred first-class wickets in a single season *

Double (volleyball) A double occurs in volleyball when a player, during a match, is credited with scoring at least ten times in one (or more) of five statistical categories: aces, kills, blocks, digs, and assists. The term was apparently derived from similar baske ...

, scoring ten or more in a statistical category (aces, kills, blocks, digs, or assists) in a single match *

Double-double (basketball) In basketball, a double-double is a single-game performance in which a player accumulates ten or more in two of the following five statistical categories: points, rebounds, assists, steals, and blocked shots. The first "double" in the term ...

, accumulating ten or more in two of five statistical categories (points, rebounds, assists, steals, or blocks) in a single game *

Double Duty Double Duty also referred to as the Indy-Charlotte Double or Memorial Day Double, is an auto racing term centered around two events held on Memorial Day weekend in most years. The two events are the annual Indianapolis 500, which is the most impo ...

, a driver attempting to compete in the Indycar Indianapolis 500 and NASCAR Coca-Cola 600 on the same day * The Double (Gaelic games), the act of winning the All-Ireland Senior Football Championship and the All-Ireland Senior Hurling Championship in the same year *

The Double (rugby league) In British rugby league, winning The Double refers to winning the Super League, the country's highest tier league competition, (Rugby Football League Championship First Division before 1996), and the Challenge Cup in one season. Nine teams have won ...

, winning the Super League and Challenge Cup in one season

Other

* Double, a bet which combines two selections; see Glossary of bets offered by UK bookmakers#Double * Polish Enigma doubles, replicating the function of Nazi Germany's cipher machines * Double, a former fraction of the

Guernsey pound The pound is the currency of Guernsey. Since 1921, Guernsey has been in currency union with the United Kingdom and the Guernsey pound is not a separate currency but is a local issue of sterling banknotes and coins, in a similar way to the banknot ...

* Double, a former rank of liturgical feast in the Roman Rite of the Catholic Church *

Double-flowered "Double-flowered" describes varieties of flowers with extra petals, often containing flowers within flowers. The double-flowered trait is often noted alongside the scientific name with the abbreviation ''fl. pl.'' (''flore pleno'', a Latin ablat ...

form of plants