For each positive integer n, let -~eN(n ) be the class of sets accepted by a family of automata of type N, each with a read-only input with endmarkers and n two-way input heads. The following result, which is applicable to most types of two-way multihead devices, is proved: If for each positive inte
Remarks on multihead pushdown automata and multihead stack automata
β Scribed by Satoru Miyano
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 660 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-0000
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The principal result described in this paper is the equivalence of the following statements : (1) Every set accepted by a nondeterministic one-way two-head finite automaton can be accepted by a deterministic two-way k-head finite automaton, for some k. (2) The context-free language Lp (described i
A checking automaton is equivalent to a one-way nonerasing stack automaton which, once it enters its stack, never again writes on its stack. The checking automaton languages (cal) form a full AFL closed under substitution. If L C a\* is an infinite cal, then L contains an infinite regular set. Conse