- Cool Runnings (Wikipedia)
Cool Runnings is a 1993 American sports comedy film directed by Jon Turteltaub from a screenplay by Lynn Siefert, Tommy Swerdlow, and Michael Goldberg, and a story by Siefert and Michael Ritchie. It is loosely based on the debut of the Jamaican national bobsleigh team at the 1988 Winter Olympics, and stars Leon, Doug E. Doug, Rawle D. Lewis, Malik Yoba and John Candy. In the film, former Olympian Irving Blitzer (Candy) coaches a novice four-man bobsleigh team from Jamaica, led by sprinter Derice Bannock (Leon).
- Empty set (Wikipedia)
In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set.