For instance, all subgroups of the base group of the standard wreath product W = Z 0 Z 2 are almost normal in W, but only few of them are nearly normal; moreover, if G is any group containing an ...
Department of Mathematics, College of Science, Al Baha University, Al Baha, KSA. Most of our notation is standard and can be found in [4]. 2. Abelian Subgroups Recall that the F C-centre of a group G ...
For a normal subgroup N of the free group 𝔽d with at least two generators, we introduce the radial limit set Λr(N, Φ) of N with respect to a graph directed Markov system Φ associated to 𝔽d. These ...
Abstract: In this paper, we investigate the properties of normal fuzzy subgroups of a fuzzy group. We also introduce the notion of a characteristic fuzzy subgroup of a fuzzy group, of which we provide ...
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