# About quasi-linear finite automata

Let M a finite state transducer define as : $$M=$$ What we mean by quasi-linear finite automata?

• In which context did you see this terminology? Would you have a reference? – J.-E. Pin Jun 17 '20 at 7:57
• @J.-E.Pin which can use the invertible transducer in cryptography. – Hicham ATATRI Jun 17 '20 at 17:27