Strukturelle Untersuchungen zur schwersten kontextfreien Sprache

  • K. Estenfeld
Vorträge In Der Reihenfolge Des Programms
Part of the Lecture Notes in Computer Science book series (LNCS, volume 48)


In this paper the grammatical structure of the "Hardest contextfree language" L0 of Sh. Greibach 4 is analyzed and the following result is obtained : There exists a grammar G0 for L0, such that for each c.f. language L and for each c.f. grammar G in Greibach-Normalform generating L the set of derivations of words of L in G is mapped functorially into the set of derivations of the words of L0 in G0.


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© Springer-Verlag Berlin Heidelberg 1977

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  • K. Estenfeld

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