src/HOL/Topological_Spaces.thy
2013-03-22 hoelzl 2013-03-22 generalize Bfun and Bseq to metric spaces; Bseq is an abbreviation for Bfun
2013-03-22 hoelzl 2013-03-22 move first_countable_topology to the HOL image
2013-03-22 hoelzl 2013-03-22 move topological_space to its own theory