Commun. Korean Math. Soc. 2014; 29(1): 9-22
Printed January 31, 2014
https://doi.org/10.4134/CKMS.2014.29.1.9
Copyright © The Korean Mathematical Society.
Nguyen Tien Quang, Pham Thi Cuc, and Nguyen Thu Thuy
Hanoi National University of Education, Hongduc University, Academy of Finance, Science Faculty
In this paper we state some applications of Gr-category theory to the classification problem of crossed modules and to that of group extensions of the type of a crossed module.
Keywords: crossed module, Gr-category, group extension, group cohomology, obstruction
MSC numbers: 20J05, 20E22, 18D10
© 2022. The Korean Mathematical Society. Powered by INFOrang Co., Ltd