Minimal DFAs for Testing Divisibility
arXiv:cs/0309052 · doi:10.1016/j.jcss.2004.02.001
Abstract
We present and prove a theorem answering the question "how many states does a minimal deterministic finite automaton (DFA) that recognizes the set of base-b numbers divisible by k have?"
LaTeX, 7 pages (corrected typo in new version)