Оn the soluble radical of the finite groups
Abstract
UDC 512.542<br>
We assume that $G$ is a finite group, $\pi(G)=\{s\}\cup \sigma$, $s > 2$, $\Sigma$ is a set of Sylow$\sigma$-subgroups taken one for each $p_i\in \sigma$, $R(G)$ is the largest normal soluble subgroup in $G$ (the soluble radical of $G$). Suppose also that each Sylow $p_i$-subgroup $G_{p_i}\in \Sigma$ normalizes thes-subgroup $T^{(i)}\neq 1$ of the group $G$. With these assumptions, we determine the conditions under whichs divides $|R(G)|$.
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