DOI

The state complexity of the star of union of an m-state DFA language and an n-state DFA language is proved to be 2m+n-1-2m-1-2 n-1+1 for every alphabet of at least two letters. The state complexity of the star of intersection is established as 3/4 2mn for every alphabet of six or more letters. This improves the recent results of A. Salomaa, K. Salomaa and Yu ("State complexity of combined operations", Theoret. Comput. Sci., 383 (2007) 140-152).

Original languageEnglish
Pages (from-to)161-178
Number of pages18
JournalFundamenta Informaticae
Volume109
Issue number2
DOIs
StatePublished - 16 Sep 2011

    Scopus subject areas

  • Computational Theory and Mathematics
  • Information Systems
  • Algebra and Number Theory
  • Theoretical Computer Science

    Research areas

  • combined operations, Descriptional complexity, finite automata, state complexity

ID: 41140645