We initiate the study of 1-torsion of finite modules over two-sided noetherian semiperfect
rings. In particular, we give a criterion for determining when the 1-torsion submodule …

We study the behaviour of modules M that fit into a short exact sequence 0→ M→ C→ M→ 0,
where C belongs to a class of modules CC, the so-called C C-periodic modules. We find a …

Module theory provides a general framework for the study of linear representations of
various mathematical objects. For example, given a field K, representations of a quiver Q …

Let R be a ring and T an (infinitely generated) tilting module. Then T is of countable type; that
is, there is a set, 𝒞, of modules possessing a projective resolution consisting of countably …

We study the notions of n-hereditary rings and its connection to the classes of finitely n-
presented modules, FP n-injective modules, FP n-flat modules and n-coherent rings. We …

We show that for a linearly compact module over a local ring (R, 𝔪), the concept of co-
support of modules provided by Melkersson is equivalent with Yassemi's concept. We also …

Very flat and contraadjusted modules naturally arise in algebraic geometry in the study of
contraherent cosheaves over schemes. Here, we investigate the structure and …

Let R be a commutative noetherian ring. Denote by mod\, R mod R the category of finitely
generated R-modules. In this paper, we study n-torsionfree modules in the sense of …

Commentationes Mathematicae Universitatis Carolinae Page 1 Commentationes Mathematicae
Universitatis Carolinae Gabriella D'Este On large selforthogonal modules Commentationes …

In this work we study flat modules over commutative noetherian rings under two kinds of
restriction: that the modules are either submodules of free modules or that they have finite …