Topological modal logic of with inequality
Topological modal logic of with inequality
复制标题
不等式的拓扑模态逻辑
DOI:
--
复制
发表时间:
2008
期刊:
影响因子:
--
通讯作者:
A V Kudinov
中科院分区:
文献类型:
--
作者:
A V Kudinov
In this note we consider prepositional modal logics with two modalities. The formulae are constructed in the standard way from a countable set Prop of propositional variables, the connectives ⊥ (falsity) and →, and the unary modalities and D . The symbols ¬, ∨, ∧ are defined as usual, and also ♦A ¬ ¬A, DA ¬D¬A, [∀]A DA ∧A. By definition, a topological model is a pair M = (X, θ), where X is a topological space and the function θ : Prop → 2 is a valuation on X. A Kripke frame F is a triple (W, R, RD), where W ̸= ∅ and R, RD ⊆ W × W . A Kripke model on F is a pair M = (F, θ), where θ : Prop → 2 is a valuation on F . As usual, the truth value of a formula A at a point is defined recursively. In particular: