« January 2008 | Main | March 2008 »
February 29, 2008 | Permalink | Comments (0) | TrackBack (0)
February 22, 2008 | Permalink | Comments (0) | TrackBack (0)
February 18, 2008 | Permalink | Comments (0) | TrackBack (0)
February 08, 2008 | Permalink | Comments (0) | TrackBack (0)
ZFの公理系と独立しているそうですが、どのような公理をZFにつけると 可算無限の濃度と実数の濃度の間の集合が得られるのだろうか
February 05, 2008 | Permalink | Comments (0) | TrackBack (0)