Finite-rank conjecture for profinite groups with finite-rank centralizers

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Let GG be a profinite group in which the centralizer of every nontrivial element has finite rank. Suppose that GG is not a pro-pp group.

Finite-rank conjecture. Then GG has finite rank.

This conjecture extends the preceding result for profinite groups whose nontrivial-element centralizers are virtually procyclic. It asks whether the same finite-rank conclusion remains valid under the weaker assumption that all such centralizers merely have finite rank.

References

Primary source

Pavel Shumyatsky and Pavel Zalesskii, “Profinite groups in which centralizers are virtually procyclic”, arXiv:1910.04838 (2019).

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