Cyclic data structures can be tricky to create and manipulate in declarative programming languages. In a declarative setting, a natural way to view cyclic structures is as denotin...
We consider the Edit distance with moves on the class of words and the class of ordered trees. We first exhibit a simple tester for the class of regular languages on words and gen...
In this paper we provide an automaton-based solution to the decision problem for a large set of monadic second-order theories of deterministic tree structures. We achieve it in two...