回複:應該沒有這麽複雜。本來題中還有一問,貼題時少貼了:

來源: 2009-01-04 10:55:22 [舊帖] [給我悄悄話] 本文已被閱讀:

Counter example: let C be the set of positive Transcendental numbers, and A, B split the remaining set.