Rties Of Overlapping Words And Disjunctive Language Of Them

In this paper, we construct some kinds of d—primitive words and prove the necessary and sufficient conditions of d—primitive words. In1989, the scholars H. J. Shyr from Taiwan made a systematic research about the nature of overlapping words and primitive words, and they got the conclusion:the set of all primitive words that the lengths are odd numbers is disjunctive language and also the set of all primitive words that the lengths are even number is disjunctive language. In another conclusion of theirs, the set of all words that the overlapping number is i is disjunctive language. In this passage, we prove that the set of all words that overlapping number is i and lengths are divided by n and the reminders are r is disjunctive language.