Double (basketball) A triple-double is defined as a performance in which a player accumulates a double digit number total in three of five statistical categories—points, rebounds, assists, steals, and blocked shots—in a game. The most common way for a player to achieve a triple-double is with points, rebounds, and assists, though on occasion players may record 10 or more steals or blocked shots in a game. The origin of the term "triple-double" is unclear. Some sources claim that it was coined by former Los Angeles Lakers public relations director Bruce Jolesch in the 1980s in order to showcase Magic Johnson's versatility, while
Quadruple product Quadruple product In mathematics, the quadruple product is a product of four vectors in three-dimensional Euclidean space. The name "quadruple product" is used for two different products, the scalar-valued scalar quadruple product and the vector-valued vector quadruple product or vector product of four vectors . The scalar quadruple product is defined as the dot product of two cross products: where a, b, c, d are vectors in three-dimensional Euclidean space. It can be evaluated using the identity: or using the determinant: The vector quadruple product is defined as the cross product of two cross products: where a, b, c, d