Abstract:
We present, in terms of Kripke models, the characteristics of all the known extensions of the modal system S4.3. Such a semantic description makes it possible to give a complete picture of the whole class of systems extending S4.3. We obtain answers to some unsolved problems.
This publication is cited in the following 1 articles:
George Weaver, Jeffrey Welaish, “Back and forth constructions in modal logic: An interpolation theorem for a family of modal logics”, J. symb. log., 51:4 (1986), 969