Apparently, this user prefers to keep an air of mystery about them.
9 Morita-invariance of Hochschild (co)homology. Dec 14 '13
3 Algebra (Not *)-Isomorphisms of von Neumann algebras Apr 12 '13
3 Equivalence of categories and derived functors. Apr 15 '13
2 Metric spaces as Cauchy complete categories, nlab entry, insight into a few of the constructions. Jun 19 '15