The Model-Checking Kit [8] is a collection of programs which allow to model finite state systems using a variety of modelling languages, and verify them using a variety of checker...
—We use the recently developed theory of forest algebras to find algebraic characterizations of the languages of unranked trees and forests definable in various logics. These i...
Mikolaj Bojanczyk, Howard Straubing, Igor Walukiew...