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تسجيل مستخدم جديدFinite $p$-Groups of Nilpotency Class $3$ with Two Conjugacy Class Sizes
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It is proved that, for a prime $p>2$ and integer $ngeq 1$, finite $p$-groups of nilpotency class $3$ and having only two conjugacy class sizes $1$ and $p^n$ exist if and only if $n$ is even; moreover, for a given even positive integer, such a group is unique up to isoclinism (in the sense of Philip Hall).
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