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Group of symplectic type
In mathematics, specifically finite group theory, a p-group of symplectic type is a p-group such that all characteristic abelian subgroups are cyclic.
According to , the p-groups of symplectic type were classified by P. Hall in unpublished lecture notes, who showed that they are all a central product of an extraspecial group with a group that is cyclic, dihedral, quasidihedral, or quaternion. gives a proof of this result.
The width n of a group G of symplectic type is the largest integer n such that the group contains an extraspecial subgroup H of order p1+2n such that G = H.C**G(H), or 0 if G contains no such subgroup.
Groups of symplectic type appear in centralizers of involutions of groups of GF(2)-type.
References
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