Dear all Is there any way to get all the normal subgroups of the normalized unit group V(FD_8), where FD_8 is the group ring of the dihedral group D_8 and F is the field with 4 elements. I tried the following straight forward way but it's not working.
g:=DihedralGroup(8);; f:=GF(4);; fg:=GroupRing(f,g);; e:=Identity(fg);; u:=Units(fg);; h:=NormalSubgroups(u);; Print(h, "\n"); -- *Regards* *Surinder Kaur* *Research scholar * *Department of Mathematics * *IIT Ropar* _______________________________________________ Forum mailing list Forum@gap-system.org https://mail.gap-system.org/mailman/listinfo/forum
