you know how paradox takes place?
jinjing
2010-07-24 11:18:45
( reads)
Subset also is set.For finite set,there is no paradox.
Subset also is set.For finite set,there is no paradox.
皆兄弟也
2010-07-24 11:52:17悖论 paradox: 由 所有集x不属于集x 的集x组成集y。问集y属不属于集y？