Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Linear grammars with one-sided contexts and their automaton representation. / Barash, Mikhail; Okhotin, Alexander.
LATIN 2014: Theoretical Informatics - 11th Latin American Symposium, Proceedings. Springer Nature, 2014. p. 190-201 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 8392 LNCS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Linear grammars with one-sided contexts and their automaton representation
AU - Barash, Mikhail
AU - Okhotin, Alexander
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The paper considers a family of formal grammars that extends linear context-free grammars with an operator for referring to the left context of a substring being defined, as well as with a conjunction operation (as in linear conjunctive grammars). These grammars are proved to be computationally equivalent to an extension of one-way real-time cellular automata with an extra data channel. The main result is the undecidability of the emptiness problem for grammars restricted to a one-symbol alphabet, which is proved by simulating a Turing machine by a cellular automaton with feedback. The same construction proves the σ02-completeness of the finiteness problem for these grammars.
AB - The paper considers a family of formal grammars that extends linear context-free grammars with an operator for referring to the left context of a substring being defined, as well as with a conjunction operation (as in linear conjunctive grammars). These grammars are proved to be computationally equivalent to an extension of one-way real-time cellular automata with an extra data channel. The main result is the undecidability of the emptiness problem for grammars restricted to a one-symbol alphabet, which is proved by simulating a Turing machine by a cellular automaton with feedback. The same construction proves the σ02-completeness of the finiteness problem for these grammars.
UR - http://www.scopus.com/inward/record.url?scp=84899932589&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-54423-1_17
DO - 10.1007/978-3-642-54423-1_17
M3 - Conference contribution
AN - SCOPUS:84899932589
SN - 9783642544224
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 190
EP - 201
BT - LATIN 2014
PB - Springer Nature
T2 - 11th Latin American Theoretical Informatics Symposium, LATIN 2014
Y2 - 31 March 2014 through 4 April 2014
ER -
ID: 41478686