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The Containment Problem for Unambiguous Register Automata

Authors Antoine Mottet , Karin Quaas



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Antoine Mottet
  • Department of Algebra, Faculty of Mathematics and Physics, Charles University, Czech Republic
Karin Quaas
  • University of Oldenburg, Germany

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Antoine Mottet and Karin Quaas. The Containment Problem for Unambiguous Register Automata. In 36th International Symposium on Theoretical Aspects of Computer Science (STACS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 126, pp. 53:1-53:15, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2019)
https://doi.org/10.4230/LIPIcs.STACS.2019.53

Abstract

We investigate the complexity of the containment problem "Does L(A)subseteq L(B) hold?", where B is an unambiguous register automaton and A is an arbitrary register automaton. We prove that the problem is decidable and give upper bounds on the computational complexity in the general case, and when B is restricted to have a fixed number of registers.

Subject Classification

ACM Subject Classification
  • Theory of computation → Automata over infinite objects
Keywords
  • Data words
  • Register automata
  • Unambiguous Automata
  • Containment Problem
  • Language Inclusion Problem

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