Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
The principle that objects are equal if and only if their observed properties are the same, regardless of internal processes that lead to those properties.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: human-sciences, philosophy, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The principle that functions are equal if and only if they operate on the same domain and for any given element of the domain the result of each of the functions is the same.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Qualifier: functional analysis
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The principle, codified in the axiom of extensionality, that sets are equal if and only if they contain the same elements.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: mathematics, sciences, set-theory
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From extensional + -ity.
Across languages
1 source translations are retained for this English entry.
