Effective Semantics for the Modal Logics K and KT via Non-deterministic Matrices

被引:4
|
作者
Lahav, Ori [1 ]
Zohar, Yoni [2 ]
机构
[1] Tel Aviv Univ, Tel Aviv, Israel
[2] Bar Ilan Univ, Ramat Gan, Israel
来源
关键词
S4;
D O I
10.1007/978-3-031-10769-6_28
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A four-valued semantics for the modal logic K is introduced. Possible worlds are replaced by a hierarchy of four-valued valuations, where the valuations of the first level correspond to valuations that are legal w.r.t. a basic non-deterministic matrix, and each level further restricts its set of valuations. The semantics is proven to be effective, and to precisely capture derivations in a sequent calculus for K of a certain form. Similar results are then obtained for the modal logic KT, by simply deleting one of the truth values.
引用
收藏
页码:468 / 485
页数:18
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