Compact
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Several specialized usages of the terms compact and compactness exist.Template:Wiktionary
- 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