Intro. to Syntax Lecture Notes

For instance, we could allow the first N, for example, in, e.g. Art Adj N P N V N, to be expanded as Art N, generating such strings as The big the books about Nixon interest me. The grammar in (6) exhibits a property that is known in mathematics as recursion, the ability of a device to re-apply to its own output an infinite number of times. ................
................