An operator is a mapping from function space to function space. If the range of the operator is on the real line or in the complex plane, the operator is usually called a functional instead. The most commonly used operators in mathematics are binary operators.
An operator is also a person who makes phone connections, though this practice is becoming less common as the process becomes more automated.
Operator has more than one meaning. As such, this article is merely a disambiguation page, listing articles associated with Operator.
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