The author uses the notions of information frames and modal logics generated by them, introduced by {\it J. Barwise} and {\it J. Seligman} [Information flow. The logic of distributed systems. Cambridge: Cambridge Univ. Press (1997; Zbl 0927.03004)], and gives axiomatizations for modal logics of information frames with various sets of properties. Weak modal logics generated by information frames and some related problems are also under study.
Reviewer: A.S.Morozov (Novosibirsk)