tag:blogger.com,1999:blog-19346366.post3533644882803641313..comments2024-03-27T23:28:20.274-04:00Comments on Face to Face: Visual: Countable union of countable sets is countableagnostichttp://www.blogger.com/profile/12967177967469961883noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-19346366.post-31562769060028727902007-06-12T07:07:00.000-04:002007-06-12T07:07:00.000-04:00dude...dude...Unknownhttps://www.blogger.com/profile/16802916093618280456noreply@blogger.com