On the Representation of Classes of Semilattices on the Set of Covering Automata for the Waterloo Automaton
摘要
We study semilattices containing covering automata for the Waterloo automaton, which plays an important role in algorithms of the vertex minimization of nondeterministic finite automata. We give a complete description of the obtained semilattices from the point of view of equivalence of the covering automata included in them to the Waterloo automaton. Three classes of semilattices are considered, several variants of representation for each class are constructed.