This paper gives a detailed and explicit description of all the 2- minimal subgroups for the finite linear and unitary groups defined over fields of odd characteristic. Also the 2-minimal subgroups of all the subgroups of these groups which contain the special linear and special unitary subgroups are described. For a finite group G, a subgroup P of G is 2-minimal if B < P, where B = NG(S) for some Sylow 2-subgroup S of G, and B is contained in a unique maximal subgroup of P. The 2-minimal subgroups of certain monomial groups, which play an important role in this work, are also determined.
|Journal||Journal of Algebra|
|Early online date||8 Oct 2019|
|Publication status||Published - 1 Feb 2020|