Numeration systems, linear recurrences, and regular sets
Information and Computation
Minimal DFA for testing divisibility
Journal of Computer and System Sciences
Applied Combinatorics on Words (Encyclopedia of Mathematics and its Applications)
Applied Combinatorics on Words (Encyclopedia of Mathematics and its Applications)
Elements of Automata Theory
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Consider a non-standard numeration system like the one built over the Fibonacci sequence where nonnegative integers are represented by words over {0,1} without two consecutive 1. Given a set Xof integers such that the language of their greedy representations in this system is accepted by a finite automaton, we consider the problem of deciding whether or not Xis a finite union of arithmetic progressions. We obtain a decision procedure under some hypothesis about the considered numeration system. In a second part, we obtain an analogous decision result for a particular class of abstract numeration systems built on an infinite regular language.