This work is a natural follow-up of the article [5]. Given a group-word w and a group G, the verbal subgroup w.G/ is the one generated by all w-values in G. The word w is called concise if w.G/ is finite whenever the set of w-values in G is finite. It is an open question whether every word is concise in residually finite groups. Let w D w.x1; : : : ; xk/ be a multilinear commutator word, n a positive integer and q a prime power. In the present article we show that the word OEwq; ny is concise in residually finite groups (Theorem 1.2) while the word OEw; ny is boundedly concise in residually finite groups (Theorem 1.1).
Words of Engel type are concise in residually finite groups. Part II / Detomi E.; Morigi M.; Shumyatsky P.. - In: GROUPS, GEOMETRY, AND DYNAMICS. - ISSN 1661-7207. - STAMPA. - 14:3(2020), pp. 991-1005. [10.4171/GGD/571]
Words of Engel type are concise in residually finite groups. Part II
Morigi M.;
2020
Abstract
This work is a natural follow-up of the article [5]. Given a group-word w and a group G, the verbal subgroup w.G/ is the one generated by all w-values in G. The word w is called concise if w.G/ is finite whenever the set of w-values in G is finite. It is an open question whether every word is concise in residually finite groups. Let w D w.x1; : : : ; xk/ be a multilinear commutator word, n a positive integer and q a prime power. In the present article we show that the word OEwq; ny is concise in residually finite groups (Theorem 1.2) while the word OEw; ny is boundedly concise in residually finite groups (Theorem 1.1).File | Dimensione | Formato | |
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