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KOCMAN, R. KŘIVKA, Z. MEDUNA, A.
Originální název
General CD Grammar Systems and Their Simplification
Typ
článek v časopise ve Scopus, Jsc
Jazyk
angličtina
Originální abstrakt
The present paper studies general CD grammar systems, whose components are general grammars, so they are computationally complete, and it investigates them working under the * mode and t mode. Most importantly, the paper presents two types of transformations that turn arbitrary general grammars into equivalent two-component general CD grammar systems with a context-free component and a non-context-free component. From the first type of transformations, the non-context-free component results with two rules of the form 11->00 and 0000->epsilon, while the other type of transformations produces the non-context-free component with two rules of the form 11->00 and 0000->2222. Apart from this significant reduction and simplification, the paper describes several other useful properties concerning these systems and the way they work. A formulation of several remarks and open problems closes this paper.
Klíčová slova
general grammars, CD grammar systems, simulated non-context-free rules, homogeneous rules, evenly homogeneous rules
Autoři
KOCMAN, R.; KŘIVKA, Z.; MEDUNA, A.
Vydáno
19. 2. 2020
ISSN
1430-189X
Periodikum
Journal of Automata, Languages and Combinatorics
Ročník
25
Číslo
1
Stát
Spolková republika Německo
Strany od
37
Strany do
54
Strany počet
18
URL
https://www.fit.vut.cz/research/publication/11509/
BibTex
@article{BUT162079, author="Radim {Kocman} and Zbyněk {Křivka} and Alexandr {Meduna}", title="General CD Grammar Systems and Their Simplification", journal="Journal of Automata, Languages and Combinatorics", year="2020", volume="25", number="1", pages="37--54", doi="10.25596/jalc-2020-037", issn="1430-189X", url="https://www.fit.vut.cz/research/publication/11509/" }