Extensional and intensional definitions: Difference between revisions

Revision as of 08:55, 9 June 2018

Revision as of 11:49, 6 January 2019

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Extensional definitions are used when listing examples would give more applicable information than other types of definition, and where listing the members of a [[set (mathematics)|set]] tells the questioner enough about the nature of that set.

This is similar to an [[Ostensive definition|ostensive definition]], in which one or more members of a set (but not necessarily all) are pointed out as examples. The opposite approach is the [[#Intensional definition|intensional definition]], which defines by listing properties that a thing must have in order to be part of the set captured by the definition.

== See also ==