Formal logicians are not concerned with existential matters which are precisely what artists are concerned with
形式逻辑学家并不关心存在的事物，而艺术家所关心的则正是这些东西。
"Logicians distinguish two main types of implication, material and strict. Proposition p materially implies proposition q if and only if the material conditional p é q (read "if p then q")is true"
"Logicians distinguish two main types of implication, material and strict. Proposition p materially implies proposition q if and only if the material conditional p é q (read "if p then q")is true"
名词 变体/同根词
‘a leading mathematical _logician_ ’
