作者: Jerzy Marcinkowski , Jakub Michaliszyn
DOI: 10.1109/LICS.2011.21
关键词: Multimodal logic 、 Substructural logic 、 Predicate logic 、 Mathematics 、 Intermediate logic 、 Discrete mathematics 、 Higher-order logic 、 Decidability 、 Many-valued logic 、 Dynamic logic (modal logic)
摘要: The Halpern-Shoham logic is a modal of time intervals. Some effort has been put in last ten years to classify fragments this beautiful with respect decidability its satisfiability problem. We complete classification by showing - what we believe quite an unexpected result that the subintervals, fragment Halpern -- Shoham where only operator ``during'', or D, allowed, undecidable over discrete structures. This surprising as this, apparently very simple, decidable dense orders and reflexive variant known be Our subsumes lot previous negative results for case, like undecidability ABE, BD, ADB, so on [2], [5].