Each Girard quantale can provide the theoretical base of linear propositionalformula.
它为线性命题公式提供了理论基础；
2
The minimum term and maximum term defined by the propositional variations, are the core problems of expressions and applications stemmed from the propositionalformula.
极小项和极大项是主范式问题的核心，体现了命题公式的成真赋值和成假赋值以及公式类型等诸多特征。
3
Propositional logic in the inference rule can be used to prove that a propositionalformula has been expressed as the theorem, but it is not easy to implement mechanization.