6 citations · 6 across the 4 of their papers we have counts for
4 papers
Abelian crossed modules and strict Picard categories
Nguyen Tien Quang, Che Thi Kim Phung, Ngo Sy Tung
In this paper, we state the notion of morphisms in the category of abelian crossed modules and prove that this category is equivalent to the category of strict Picard categories an…
Braided equivariant crossed modules and cohomology of -modules
Nguyen Tien Quang, Che Thi Kim Phung, Pham Thi Cuc
If is a group, then braided -crossed modules are classified by braided strict -graded categorial groups. The Schreier theory obtained for -module extensions of the typ…
The prolongation of central extensions
Nguyen Tien Quang, Che T. Kim Phung, Pham Thi Cuc
The aim of this paper is to study the -prolongation of central extensions. We obtain the obstruction theory for -prolongations and classify -prolongations t…
The Relation between Ann-Categories and Ring Categories
Nguyen Tien Quang, Nguyen Thu Thuy, Che Thi Kim Phung
There are different categorizations of the definition of a {\it ring} such as {\it Ann-category} (see N. T. Quang [6]), {\it ring category} (see M. Kapranov and V.Voevodsky [2]),..…