We present a relation between the sets accepted by two-way pushdown automata and certain tape complexity classes of off-line Turing machines. Specifically, let L be a language accepted by a nondeterministic off-line Turing machine T. Let T have a t-symbol storage-tape alphabet. If for all but a fini
The size of power automata
β Scribed by K. Sutner
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 179 KB
- Volume
- 295
- Category
- Article
- ISSN
- 0304-3975
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β¦ Synopsis
We describe a class of simple transitive semiautomata that exhibit full exponential blow-up during deterministic simulation. For arbitrary semiautomata we show that it is PSPACE-complete to decide whether the size of the accessible part of their power automata exceeds a given bound. We comment on the application of these results to the study of cellular automata.
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