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تسجيل مستخدم جديدProfinite groups with restricted centralizers of $pi$-elements
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A group $G$ is said to have restricted centralizers if for each $g$ in $G$ the centralizer $C_G(g)$ either is finite or has finite index in $G$. Shalev showed that a profinite group with restricted centralizers is virtually abelian. Given a set of primes $pi$, we take interest in profinite groups with restricted centralizers of $pi$-elements. It is shown that such a profinite group has an open subgroup of the form $Ptimes Q$, where $P$ is an abelian pro-$pi$ subgroup and $Q$ is a pro-$pi$ subgroup. This significantly strengthens a result from our earlier paper.
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