3 citations · 3 across the 10 of their papers we have counts for
10 papers
Group Extensions of the Co-type of a Crossed Module and Strict Categorical Groups
Nguyen Tien Quang
Prolongations of a group extension can be studied in a more general situation that we call group extensions of the co-type of a crossed module. Cohomology classification of such ex…
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…
Equivariant Crossed Modules and Cohomology of Groups with Operators
Nguyen Tien Quang, Pham Thi Cuc
In this paper we study equivariant crossed modules in its link with strict graded categorical groups. The resulting Schreier theory for equivariant group extensions of the type of…
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…
Crossed Bimodules over Rings and Shukla Cohomology
Nguyen Tien Quang, Pham Thi Cuc
In this paper we present some applications of Ann-category theory to classification of crossed bimodules over rings, classification of ring extensions of the type of a crossed bimo…
Cohomological classification of braided -categories
Nguyen Tien Quang, Dang Dinh Hanh
A braided -category is an -category together with a braiding such that is a braided tensor category,…