Prefix-Primitive Annihilators of Languages

  title={Prefix-Primitive Annihilators of Languages},
  author={Chen-Ming Fan and Cheng-Chih Huang},
This paper studies algebraic properties concerning the p-primitive annihilators of languages. The p-primitive annihilators of languages contains left P1-annihilators and right P1-annihilators. There are some interesting results presented in this paper. Such as: for every finite language L, the left P1-annihilator of L is not equal to the right P1annihilator of L, the set γP1(L) is not regular for any finite language L, and the set γP1(L) is not empty for any thin language. 

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