出典:Wikipedia
出典:『Wikipedia』 (2010/11/14 18:15 UTC 版)
In propositional logic disjunction elimination is the inference that, if "A or B" is true, and A entails C, and B entails C, then we may justifiably infer C. The reasoning is simple: since at least one of the statements A and B is true, and since either of them would be sufficient to entail C, C is certainly true.