Dependence logic with a majority quantifier

Abstract

We study the extension of dependence logic D by a majority quantifier M over finite structures. We show that the resulting logic is equi-expressive with the extension of second-order logic by second-order majority quantifiers of all arities. Our results imply that, from the point of view of descriptive complexity theory, D(M) captures the complexity class counting hierarchy. © A. Durand, J. Ebbing, J. Kontinen, and H. Vollmer.