extensionality
/ɪkˌstɛnʃəˈnælɪti/
noun
- The principle that objects or concepts are defined by their external properties or members, not by their internal descriptions; used especially in logic, mathematics, and philosophy.
- The axiom of extensionality states that two sets are identical if they have the same elements.
- The debate between intensionality and extensionality is central to the philosophy of language.
- In computer science, extensionality helps define functions by their input-output behavior.
Antonyms