Leftmost derivations of propagating scattered context grammars: a new proofArticle
Authors: Tomáš Masopust 1; Jiří Techet 1
0000-0001-9282-758X##NULL
Tomáš Masopust;Jiří Techet
1 Faculty of Information Technology [Brno]
In 1973, V. Virkkunen proved that propagating scattered context grammars which use leftmost derivations are as powerful as context-sensitive grammars. This paper brings a significantly simplified proof of this result.
Alexander Meduna;Jiří Techet, 2008, An infinite hierarchy of language families generated by scattered context grammars with n-limited derivations, Theoretical Computer Science, 410, 21-23, pp. 1961-1969, 10.1016/j.tcs.2008.12.013, https://doi.org/10.1016/j.tcs.2008.12.013.