
doi: 10.1007/bf01097927
We show that a free nilpotent group of countable rank, as well as a free group of countable rank of the variety defined by the identity [[x1 x2,..., xn], [xn+1, xn+2]]=1, satisfies the maximal condition for normal subgroups admitting endomorphisms induced by order preserving one-to-one mappings of the set of free generators into itself.
Free nonabelian groups, Chains and lattices of subgroups, subnormal subgroups, Quasivarieties and varieties of groups
Free nonabelian groups, Chains and lattices of subgroups, subnormal subgroups, Quasivarieties and varieties of groups
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