The third, I demonstrated that the Boolean_valued model V B ( where B is a complete Boolean algebra) of ZFC axiom system in set theory is, too, a Boolean valued model of the deontic logical systems D 1? D 2 and D 3. 最后证明集合论的ZFC公理系统的布尔值模型VB(B是一个完全的布尔代数)也是道义模态逻辑系统D1、D2和D3的布尔值模型。
The Complete Axiom Set of MP~ M 中介命题演算系统MP~M的公理完备集