Two Simple Incomplete Modal Logics

Two Simple Incomplete Modal Logics
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两个简单的不完全模态逻辑

DOI:
10.1111/j.1755-2567.1978.tb00830.x
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发表时间:
2008
期刊:
影响因子:
0.5
通讯作者:
J. Benthem
J. Benthem
中科院分区:
--
文献类型:
--
作者:
J. Benthem

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下面要考虑的模态公式属于带有命题字母p,q,r,.的模态命题语言,布尔运算符1(否定),-+(实质蕴涵),A(合取),v(析取),c*(实质等价)和模态运算符0(必然)和0(可能)。模态公式cp的次数d(cp)根据子句(i)d(p)= 0归纳地定义,对于命题字母p,
The modal formulas to be considered below belong to the modal propositional language with proposition letters p, q, r,..., Boolean operators 1 (negation),-+(material implication), A (conjunction), v (disjunction), c*(material equivalence) and modal operators 0 (necessarily) and 0 (possibly). The degree d (cp) of a modal formula cp is defined inductively according to the clauses (i) d (p)= 0, for proposition letters p,