Empty operator is an Operator without phonological content.
in (i) the 'implicit relative pronoun' is an empty operator binding the variable t.
(i) the man [CP Oi [IP you fired ti yesterday]]
- Chomsky, N. 1982. Some concepts and consequences of the theory of government and binding, MIT Press, Cambridge, Mass.
- Haegeman, L. 1991. Introduction to Government and Binding Theory, Oxford, Blackwell.