一句话:提出基于实数格与群运算的实值模态逻辑,给出带标签 tableau、coNEXPTIME 上界,并建立乘性片段的切消除与公理化。
本文引入一种实值模态逻辑,将标准模态逻辑 K 的 Kripke 框架语义与实数上的格运算和群运算相结合,在世界局部解释模态连接词。作者为该系统设计带标签的 tableau 证明系统,并据此证明判定公式有效性的复杂度上界为 coNEXPTIME。随后聚焦模态-乘性片段,利用该 tableau 系统证明一个允许切消除的序贯演算的完备性,同时给出一个扩展 Abelian 逻辑乘性片段的公理系统,并证明其完备性。该工作将多值语义、模态逻辑与证明论方法结合,为实值模态推理提供了可判定性与证明系统基础。
A many-valued modal logic is introduced that combines the usual Kripke frame semantics of the modal logic K with connectives interpreted locally at worlds by lattice and group operations over the real numbers. A labelled tableau system is provided and a coNEXPTIME upper bound obtained for checking validity in the logic. Focussing on the modal-multiplicative fragment, the labelled tableau system is then used to establish completeness for a sequent calculus that admits cut-elimination and an axiom system that extends the multiplicative fragment of Abelian logic.