When is a quasi-p-projective module discrete? Talebi, Y., Khalili Gorji, I. (2008) The Journal of Nonlinear Sciences and its Applications
When is the category of flat modules abelian? J. García, J. Martínez Hernández (1995) Fundamenta Mathematicae Let Fl(R) denote the category of flat right modules over an associative ring R. We find necessary and sufficient conditions for Fl(R) to be a Grothendieck category, in terms of properties of the ring R.