Unitary units in modular group algebras of 2-groups |
| |
Authors: | A Bovdi |
| |
Institution: | 1. Kossuth Lajos University , P.O.Box-12, Debrecen, 4010, Hungary bodibela@math.klte.hu |
| |
Abstract: | We study the unitary subgroupV ?(F2 G) in the group algebras F2 Gof 2-groups of maximal class over the field F2of two elements. We show that there does not exist a normal complement to Gin V ?(F2 G) if and only if Gis the dihedral group of order 2n(n≥ 5) or the semidihedral group of order 2n(n≥5). We also describe V ?(F2 G) when the subgroup Ghas order 8 and 16 and in this case there exist a normal complement of Gin V ?(F2 G). |
| |
Keywords: | Associative pair Perfect |
|
|