| [ Christian ] in KIDS 글 쓴 이(By): RNB (rainbow) 날 짜 (Date): 2001년 12월 8일 토요일 오전 09시 30분 19초 제 목(Title): about procedure you said: 1>Your thought as I understand is X ∪ X^C = U, when you say they complemets. 2>And I was saying X ∩ X^C = φ, that X and X^C cannot share territory. >They do not collide, But do you understand the latter? 'They' in the third sentence indicates 1> and 2>. It could be misunderstood as indicating X and X^C(Complement of X). ^^ _________ Anyway, what's the difference between the following "they"? X ∪ X^C = U :complement X ∩ X^C = φ :conflict They are logically equivalent from definition of complement set. X^C. What's the logical base which makes those two different? If you don't have, I will say your thought is illogical. (your distinguish between complement and conflict is illogical) |