References Page 1 References [1] S. Abhyankar, S. Wiegand, On the compositum of two power
series rings, Proc. Amer. Math. Soc. 112 (1991), 629 – 636. [2] U. Albrecht, Endomorphism …

We prove that every homotopical localization of the circle S 1 is an aspherical space whose
fundamental group A is abelian and admits a ring structure with unit such that the evaluation …

This paper provides a comprehensive investigation of the cellular approximation functor
cellAG, in the category of groups, approximating a group G by a group A. We also study …

We are investigating cellular covers of abelian groups (for definition, see Preliminaries).
Surjective cellular covers of divisible abelian groups have been characterized in a recent …

We describe the action of idempotent transformations on finite groups. We show that
finiteness is preserved by such transformations and enumerate all possible values such …

In this paper we improve recent results dealing with cellular covers of $ R $-modules.
Cellular covers (sometimes called co-localizations) come up in the context of homotopical …

Cellular covers which originate in homotopy theory are considered here for a very special
class: divisible uniserial modules over valuation domains. This is a continuation of the study …

THE CELLULAR STRUCTURE OF THE CLASSIFYING SPACES OF FINITE GROUPS Page
1 ISRAEL JOURNAL OF MATHEMATICS 184 (2011), 129–156 DOI: 10.1007/s11856-011-0062-0 …

We describe the role of the Schur multiplier in the structure of the p–torsion of discrete
groups. More concretely, we show how the knowledge of H 2 G allows us to approximate …

In this paper we show that every cotorsion-free and reduced abelian group of any finite rank
(in particular, every free abelian group of finite rank) appears as the kernel of a cellular cover …