Every Iterated Morphism Yields a co-CFL

@article{Berstel1986EveryIM,
  title={Every Iterated Morphism Yields a co-CFL},
  author={Jean Berstel},
  journal={Inf. Process. Lett.},
  year={1986},
  volume={22},
  pages={7-9}
}
Recently, Main [3] and Main, Bucher and Haussler [4] disproved quite a lot of conjectures about various classes of context-free languages by showing that the complement of the set of left factors of the T h u e M o r s e sequence and of other related infinite words is context-free. The aim of this article is to extend the latter result by showing, with almost the same proof technique, that, for any i terated morphism, the complement of the set of left factors of an infinite word it generates is… CONTINUE READING

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