Operator
This is an old revision of this page, as edited by CSGuy (talk | contribs) at 04:31, January 14, 2008. It may differ significantly from current revision.
An operator is a map from function space to function space. If the range of an operator is on the real line or in the complex plane, the operator is usually called a functional instead.
An operator is also a person who makes phone connections, though this practice is becoming less common as the process becomes more automated.