冪集，冪集的冪集，冪集的冪集的。。。可能超出初等集合論範圍。

來源: 皆兄弟也於 2010-07-24 07:32:35 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.