# Double

Double, The Double or Dubble may refer to:

## Mathematics and computing

• Multiplication by 2
• Double precision, a floating-point representation of numbers that is typically 64 bits in length
• A double number of the form ${\displaystyle x+yj}$ , where ${\displaystyle j^{2}=+1}$
• A 2-tuple, or ordered list of two elements, commonly called an ordered pair, denoted ${\displaystyle (a,b)}$
• Double (manifold), in topology

## Food and drink

• A drink order of two shots of hard liquor in one glass
• A "double decker", a hamburger with two patties in a single bun

## Sports

• Double (association football), the act of a winning a division and primary cup competition in the same season
• Double (baseball), a two-base hit in baseball
• Double (cricket), the feat of scoring a thousand first-class runs and taking a hundred first-class wickets in a single season
• Double (volleyball), scoring ten or more in a statistical category (aces, kills, blocks, digs, or assists) in a single match
• Double (Gaelic games), the act of winning the All-Ireland Senior Football Championship and the All-Ireland Senior Hurling Championship in the same year
• Double (rugby league), winning the Super League and Challenge Cup in one season
• Double-double (basketball), accumulating ten or more in two key statistical categories – points, rebounds, assists, steals, and blocked shots – in a single game
• Double Duty, competing in the Indianapolis 500 and Coca-Cola 600 on the same day or weekend.