Element

If x is a member of a set A, then x is said to be an element of A, written x in A. If x is not an element of A, this is written x not in A.

The term element also refers to a particular member of a group, or entry a_(ij) in a matrix A or unevaluated determinant det(A).

See also

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Cite this as:

Weisstein, Eric W. "Element." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Element.html

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