Sep4 comment Direct sum of subspaces and isomorphisms @Jim i hope it's fixed now. Sep4 comment Direct sum of subspaces and isomorphisms @Jim Every vector in $V$ can be written uniqueley as a sum of the $W_i's$ where $w_i\in W_i$ Sep4 revised Direct sum of subspaces and isomorphisms added 7 characters in body Sep4 comment Direct sum of subspaces and isomorphisms @DonAntonio Check now.. Sep4 revised Direct sum of subspaces and isomorphisms added 446 characters in body Sep4 comment Direct sum of subspaces and isomorphisms @DonAntonio I know, I hit enter by mistake :) did not want to delete.. Sep4 comment Direct sum of subspaces and isomorphisms @DonAntonio I'm working on it. Sorry Sep4 asked Direct sum of subspaces and isomorphisms Sep3 revised Subgroups of finite and infinite groups Clarify statements to be proven Sep3 comment Subgroups of finite and infinite groups @Rebecca ${}{}{}{}$ Now? Sep3 revised Subgroups of finite and infinite groups added 15 characters in body Sep3 comment Subgroups of finite and infinite groups @hjpotter92 $H$ is finite is given because $G$ is finite. Sep3 comment Subgroups of finite and infinite groups @Rebecca I fixed that by making $H$ proper. Sep3 revised Subgroups of finite and infinite groups added 14 characters in body Sep3 comment Subgroups of finite and infinite groups @hjpotter92 I did not get that. I'm proving both directions of the equivalence. Sep3 asked Subgroups of finite and infinite groups Aug27 comment Direct sums of subspaces @Etienne Okay. Thank you! Aug27 comment Direct sums of subspaces @Vishal The intersection of n subspaces is 0 iff they are independent Aug27 revised Length of the voronoi diagram added 2 characters in body; edited title Aug27 revised Direct sums of subspaces added 117 characters in body