Some Remarks on Nilpotent Groups with Roots

نویسنده

  • GILBERT BAUMSLAG
چکیده

is soluble for every pG.m and every gGG. Similarly we call a group G a Dor-group if the equation (1) (above) is not only soluble, but uniquely soluble. The class of Fur-groups and the class of Dor-groups will be denoted respectively by Em and Dm. Clearly Em~2)Dm. There is a less trivial relationship between these two classes of groups. If we denote by ©(C) the class of groups which occur as homomorphic images of the members of a given class of groups C, then ®(Dm) = Em (see G. Baumslag [l]). Now suppose that N denotes the class of nilpotent groups. One of the consequences of our results in this note is the fact that &(Dmf~\N) =EmC\N. However we shall show that if L is the class of locally nilpotent groups then ®(DmC\L) ^EmHsL. This leads us to ask whether, perhaps, Q(DmC\S)'Q.EmC\L, where 5 here is the class of locally soluble groups.

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تاریخ انتشار 2010