Domain of definition

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of a function

The set on which the function considered is given, that is, the collection of all elements with each of which the given function associates an element of some set . Thus, if , then is called the domain of definition of .


The set of values of , i.e. if denotes the domain of definition, is called the range of values of .

How to Cite This Entry:
Domain of definition. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by L.D. Kudryavtsev (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article