…It is also called a dilemma. A concept that appears in traditional formal logic. Originally, it was a method of inferring a consequent from two hypothetical propositions that have a common consequent and the disjunction of their two antecedents. However, it can also be used to extend this inference by taking a different consequent or by making one of the premises a disjunction of the negation of each consequent rather than a disjunction of the consequent. *Some of the terminology explanations that mention "dilemma" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ジレンマdilemmaともいう。伝統的形式論理学に登場する概念で,元来,後件を共通にする二つの仮言命題と,その二つの前件の選言とからその後件を推論する論法であるが,後件を別のものにとったり,前提の一つを後件の選言でなく各後件の否定の選言としたりして拡張した推論をもいう。… ※「dilemma」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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