矛む盾じゅん律りつ

noun

law of contradiction; principle of non-contradiction

In classical logic, the principle that a proposition cannot be both true and false at the same time and in the same respect.

• 矛む盾じゅん律りつは、アリストテレスによって定てい式しき化かされた論ろん理り学がくの基き本ほん原げん理りの一ひとつです。

  The law of contradiction is one of the fundamental principles of logic formulated by Aristotle.