arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2203.01237math.LO
收藏

次协调哥德尔模态逻辑

Paraconsistent Gödel modal logic

Marta Bílková, Sabine Frittella, Daniil Kozhemiachenko

摘要:

我们引入了一个~次协调的模态逻辑$\mathbf{K}\mathsf{G}^2$,它基于带余蕴涵的哥德尔逻辑(双哥德尔逻辑),用德摩根否定扩展了$\neg$。我们使用的逻辑形式化推理分级,不完整和不一致的信息。$\mathbf{K}\mathsf{G}^2$的语义是二维的:我们解释$\mathbf{K}\mathsf{G}^2$上的清晰框架与两个估值$v_1$和$v_2$,通过$\neg$连接,分配给每个公式的两个值从实值区间$[0,1]$。第一个(分别),第二)估值对正(分别,否定的)信息,国家给一个~语句。我们得到的$\mathbf{K}\mathsf{G}^2$是严格的表达比经典的模态逻辑$\mathbf{K}$通过证明的分支框架是可定义的,并通过建立一个忠实的嵌入$\mathbf{K}$到$\mathbf{K}\mathsf{G}^2$。我们还构造了多分支框架上的$\mathbf{K}\mathsf{G}^2$的一个约束表演算,建立了它的可判定性,并给出了一个复杂性估计.

英文摘要:

We introduce a~paraconsistent modal logic $\mathbf{K}\mathsf{G}^2$, based on Gödel logic with coimplication (bi-Gödel logic) expanded with a De Morgan negation $\neg$. We use the logic to formalise reasoning with graded, incomplete and inconsistent information. Semantics of $\mathbf{K}\mathsf{G}^2$ is two-dimensional: we interpret $\mathbf{K}\mathsf{G}^2$ on crisp frames with two valuations $v_1$ and $v_2$, connected via $\neg$, that assign to each formula two values from the real-valued interval $[0,1]$. The first (resp., second) valuation encodes the positive (resp., negative) information the state gives to a~statement. We obtain that $\mathbf{K}\mathsf{G}^2$ is strictly more expressive than the classical modal logic $\mathbf{K}$ by proving that finitely branching frames are definable and by establishing a faithful embedding of $\mathbf{K}$ into $\mathbf{K}\mathsf{G}^2$. We also construct a~constraint tableau calculus for $\mathbf{K}\mathsf{G}^2$ over finitely branching frames, establish its decidability and provide a~complexity evaluation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑