Proving Parikh's theorem using Chomsky-Schutzenberger theorem
arXiv:1710.09612
Abstract
Parikh theorem was originally stated and proved by Rohkit Parikh in MIT research report in 1961. Many different proofs of this classical theorems were produced then; our goal is to give another proof using Chomsky-Schutzenberger representation theorem. We present the proof which doesn't use any formal language theory tool at all except the representation theorem, just some linear algebra.
arXiv comment4 pages, first appeared as solution to an excersize in my formal language course