… modules, then locally C-pureprojective modules are just the locally pure-projective modules;
and, when C is the class of all projective modules, then locally C-pure-projective modules …

… of a projective normal surface having mixed singular cohomology. Morally speaking, as soon
as you leave the world of projective manifolds and dive into the one of projective varieties, “…

… R-module is c-pure projective if and only if it is projective. Proof: … Every R-module is c-pure
projective if and only if R is a simple, … a c-pure projective module P with a c-pure submodule S …

… These categories are constructed from a particular type of module, called a curve module.
By allowing more nonsplit extension between simple subquotients of curve modules, this …

This is the first extensive treatment of the theory of corings and their comodules. In the first
part, the module-theoretic aspects of coalgebras over commutative rings are described. …

… We prove that the class of Gorenstein projective modules is special precovering over a right
coherent ring R that is left n-perfect. … with all Si in F lat++ and with C pure injective and flat. …

… modules, and the geometry of which faithfully reflects the constraints met in constructing such
modules… at approximating finitely generated modules by modules of a simpler structure, the …

In this paper, we show that for every finite group with cyclic Sylow p-subgroups the principal
p-block B is rigid with respect to the trivial simple module. This means that each …

… a flat module (with respect to R-Mod). Then, by 1.14, all free R-modules and their direct
summands (= projective modules) are … free and projective modules N and N . (3) is easily verified. …

… ), where M is a finitely presented right R-module. Yoneda’s Lemma implies that a functor in
((… projective object in ((mod-R)op, Ab). Thus, a functor G in ((mod-R)op, Ab) is projective if and …