除了无矛盾律（law of noncontradiction）和排中律（law of the excluded middle），再没有更基本的逻辑原则了。无矛盾律：A和非A不可能同时成立。
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The law of excluded middle is one of the basic laws of thought, which underlies all demonstrations in the classical logic.
排中律是思维的基本规律之一，它构成古典逻辑中所有证明的基础。
The paper analyzes the contents of exclusive logical thinking, its manifestation in economic activities, and its relationship with the law of excluded middle and disjunctive inference.
本文分析了排他性逻辑思维的内容，在经济活动中的表现及与排中律、选言推理的关系。
Logic rules are made up of the law of Identity, non-contradiction, excluded middle add sufficient evidence.
逻辑规律是关于思维的逻辑形式的规律，它由同一律、不矛盾律、排中律和充足理由律组成。
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