Searching for "k 1 Heads Are Better than k" – sorted by Relevance.
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Multi-Head Finite Automata: Data-Independent Versus Data-Dependent Computations
- is best possible, because k + 1 heads are better than k as shown in [9, page 69, Theorem 1]. Observe
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Automata with Nested Pebbles Capture First-Order Logic with Transitive Closure
- languages [43, 48]. In fact, it is known that in general k + 1 heads are better than k even for a single
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