“material equivalence”的概念、定义、翻译、参考文献-科学参考

单词	material equivalence
释义	material equivalence Logic In classical logic, the binary connective $\equiv$ such that $φ \equiv ψ is {\begin{cases} true if φ and ψ are both true or both false \\ false otherwise \end{cases}$ Material equivalence of $φ$ and $ψ$ is definable as the conjunction of $φ \supset ψ$ and $ψ \supset φ$ , where $\supset$ is the material conditional.
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