Abstract. CVC3, a joint project of NYU and U Iowa, is the new and latest version of the Cooperating Validity Checker. CVC3 extends and builds on the functionality of its predecesso...
Abstract. We investigate cut-elimination and cut-simulation in impredicative (higher-order) logics. We illustrate that adding simple axioms such as Leibniz equations to a calculus ...
A boolean formula in conjunctive normal form (CNF) F is refuted by literal?once resolution if the empty clause is inferred from F by resolving on each literal of F at most once. Li...
Abstract. We present a rough set approach to vague concept approximation within the adaptive learning framework. In particular, the role of extensions of approximation spaces in se...
We study the expressive power of the logics EF + F-1 , 2 and boolean combinations of 1 over ranked trees. In particular, we provide effective characterizations of those three logic...