Over an associative ring we consider a class X of left modules which is closed under set-indexed coproducts and direct summands. We investigate when the triangulated homotopy category K(X) is compactly generated, and give a number of examples.
Homology, Homotopy and Applications, Vol. 9 (2007), No. 1, pp.257-274.
Available as: dvi dvi.gz ps ps.gz pdf