Abstract
Let H be a subgroup of a group G generated by a finite G-invariant subset X = tU k i=1 C i that consists of elements of finite order, where C i is a class of conjugate elements of G with representative a i . We prove that
where o(a i ) is the order of the element a i ∈ C i . Best estimates are obtained for some important special cases.
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Original Russian Text © L.S. Kazarin, 2013, published in Trudy Instituta Matematiki i Mekhaniki UrO RAN, 2013, Vol. 19, No. 3.
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Kazarin, L.S. On Ditsman’s lemma. Proc. Steklov Inst. Math. 285 (Suppl 1), 91–98 (2014). https://doi.org/10.1134/S0081543814050095
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DOI: https://doi.org/10.1134/S0081543814050095