Abstract
Of interest are the subgroups of various groups which have nonempty intersection with each class of conjugate elements of the group under study. We call these subgroups conjugately dense and study Neumann's problem of describing them in the Chevalley groups over a field. The main theorem lists all conjugately dense subgroups of the Chevalley groups of Lie rank 1 over a locally finite field.
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Zyubin, S.A., Levchuk, V.M. Conjugately Dense Subgroups of Locally Finite Chevalley Groups of Lie Rank 1. Siberian Mathematical Journal 44, 581–586 (2003). https://doi.org/10.1023/A:1024772104335
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DOI: https://doi.org/10.1023/A:1024772104335