# Manuals/calci/COMPLEMENT

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**COMPLEMENT (B,A)**

- and are any two sets.

## Description

- This function shows the complement of the given sets.
- In , and are two sets.
- In Set theory,the complement of a set A refers to elements not in A and which will be in the set B(Universal set).
- So complement os A is defined by:The relative complement of A with respect to a set B, also termed the difference of sets A and B, written , is the set of elements in B but not in A.
- When all sets under consideration are considered to be subsets of a given set U(Universal Set), the absolute complement of A is the set of elements in U but not in A.