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Disjunctive Languages

  • Yuqi Guo,
  • Yun Liu,
  • Shoufeng Wang

摘要

The main topics of this chapter is disjunctive decompositions of languages. A language is said to be disjunctive decomposable if it can be decomposed into a disjoint union of several disjunctive languages. In 1970–1980s, when the study of disjunctive languages was becoming more popular, many scholars developed in-depth researches on the disjunctive decompositions of languages. In this chapter, we first give a brief introduction to the theory of disjunctive languages, and then, give in detail some kinds of finite and infinite disjunctive decompositions of dense languages.