Compact

Several specialized usages of the terms compact and compactness exist.

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Multiple definitions of the term "compact" are found in mathematics:
- The most common usage relates to topology, where one considers compact spaces. That article also includes the closely related notion of a compact set.
- The compactness theorem is a key theorem in the formal logic of propositional and predicate calculus.
- In order theory and domain theory, the different (though not entirely unrelated) notion of a compact element is typically used.
Compact flash is a type of data storage device.
Compact car is an automobile size class in the American market.
Compact disc is an optical disc used to store digital data, originally developed for storing digital audio.
A compact is also a British term for a format of newspaper.
In diplomacy, a compact is an agreement between two or more states.
Compact was a 1960s British TV soap opera

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Compact

See also: Compact, Compact (diplomacy), Compact (newspaper), Compact car, Compact disc, Compact element, Compact flash, Compact set