ON DOL SYSTEMS WITH IMMIGRATION
: HONKALA J
Publisher: ELSEVIER SCIENCE BV
: 1993
: Theoretical Computer Science
: THEORETICAL COMPUTER SCIENCE
: THEOR COMPUT SCI
: 120
: 2
: 229
: 245
: 17
: 0304-3975
DOI: https://doi.org/10.1016/0304-3975(93)90289-6
We study DOL systems with immigration. We show that sequence and growth equivalence are decidable. We establish regularity and decidability results concerning degrees of ambiguity. As a consequence of results about subword complexity, we show that regularity and omega-regularity are decidable for languages generated by growing systems.