Abstract: We show that referenced automata and type-3 time-varying grammars have the same power. Then some relationships between families of languages ...
We investigate the conversion of one-way nondeterministic finite automata and context-free grammars into Parikh equivalent one-way and two-way deterministic ...
Preliminaries. For the classical notions of formal languages and automata theory the rea der is referred to [2] and [3]; we present only the basic notations ...
In this paper, we consider two machine models equivalent in power to Turing machines. Time varying finite automata are defined and it is shown that time varying ...
Faculty of Informatics, “Al. I. Cuza” University of Iaşi, 6600 Iaşi, Romania |. Publication type: Book Chapter. Publication date: 1994-10-01.
meters are time-dependent the system is said to be time-varying. The system response y(te) of a time varying system thus becomes: y(Q =/[«(«: t0,te),t;y(t0)];.
For context-free grammars, all of the following restrictive devices are equivalent with respect to generative power: a regular control language, programming ...
Missing: Varying Referenced
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Jan 17, 2019 · The automaton model that you are probably looking for is that of tree automata, that is, finite automata accepting trees instead of strings.
Missing: Varying | Show results with:Varying
It will be seen that every recursively enumerable language is generated by a periodically time-variant context-free grammar. The theory is also applicable to ...
Missing: Referenced | Show results with:Referenced
We show that synchronized extension systems [17] can be successfully used to simulate timing mechanisms incorporated into grammars and automata [3, 7-9, ...