0121132人目の素数さん垢版 | 大砲2015/04/17(金) 21:21:52.45ID:oyQOgKjs >>116 Proof. intros x a. unfold mu. intros P b. apply b. apply (m mu P). intros x0 y. apply y. intro y0. apply (b y0). apply a. Qed.