Define the concept of a regular expression with complement.

Define the concept of a regular expression with complement.

A regular expression with complement is a type of regular expression that represents a language by specifying all the strings that are not part of the language. It is denoted by adding a bar (¬) or a prime (') symbol above the regular expression. The complement of a regular expression R, denoted as ¬R or R', represents all the strings that are not accepted by R. In other words, it represents the set of all strings that do not match the pattern defined by the regular expression R.