•  27
    Modal Logics of Arrows
    In Maarten de Rijke (ed.), Advances in Intensional Logic, Kluwer Academic Publishers. pp. 137--171. 1997.
  •  417
    A modal approach to dynamic ontology: modal mereotopology
    Logic and Logical Philosophy 17 (1-2): 163-183. 2008.
    In this paper we show how modal logic can be applied in the axiomatizations of some dynamic ontologies. As an example we consider the case of mereotopology, which is an extension of mereology with some relations of topological nature like contact relation. We show that in the modal extension of mereotopology we may define some new mereological and mereotopological relations with dynamic nature like stable part-of and stable contact. In some sense such “stable” relations can be considered as appr…Read more
  •  110
    PDL with intersection of programs: a complete axiomatization
    with Philippe Balbiani
    Journal of Applied Non-Classical Logics 13 (3): 231-276. 2003.
    One of the important extensions of PDL is PDL with intersection of programs. We devote this paper to its complete axiomatization.
  •  54
    Rough polyadic modal logics
    Journal of Applied Non-Classical Logics 1 (1): 9-35. 1991.
    Rough polyadic modal logics, introduced in the paper, contain modal operators of many arguments with a relational semantics, based on the Pawlak's rough set theory. Rough set approach is developed as an alternative to the fuzzy set philosophy, and has many applications in different branches in Artificial Intelligence and theoretical computer science.