Co-prolongations of a group extension

نویسندگان
Quang, Nguyen Tien ID 1
Tuyen, Doan Trong ID 2
Thuy, Nguyen Thi Thu ID 3

1 Hanoi National University of Education

2 National Economics University

3 Hanoi University of Science and Technology

doi
10.22108/ijgt.2014.3225
چکیده

The aim of this paper is to study co-prolongations‎ ‎of central extensions‎. ‎We construct the obstruction theory for‎ ‎co-prolongations‎ ‎and classify the equivalence classes of these by kernels of homomorphisms‎ ‎between 2-dimensional cohomology groups of groups‎.

کلیدواژه‌ها
group extension, cohomology of groups, prolongation, obstruction