Apparently, this user prefers to keep an air of mystery about them.
3 Weibel 1.4.1: Show that acyclic bounded below chain complexes of free R-modules are always split exact. Nov 17 '14
3 Is the commutator subgroup functor exact? May 13 '15
0 In a model category, is the full subcategory of fibrant objects a reflective subcategory? Jul 10 '15