<p>We reducethe solution of the Kegel–Wielandt <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11202_2025_1517_Article_IEq2.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">$ \sigma $</EquationSource> </InlineEquation>-problemfor an arbitrary partition <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11202_2025_1517_Article_IEq3.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">$ \sigma $</EquationSource> </InlineEquation> of the set of all primesto its solution in the class of all <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11202_2025_1517_Article_IEq4.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">$ \sigma $</EquationSource> </InlineEquation>-completesimple nonabelian groups.We also give a&#xa0;sufficient criterion for the<InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11202_2025_1517_Article_IEq5.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">$ \sigma $</EquationSource> </InlineEquation>-subnormality of a subgroup in a finite group for a partition <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11202_2025_1517_Article_IEq6.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">$ \sigma $</EquationSource> </InlineEquation> in which&#xa0;2 and&#xa0;3 belong to the same component.</p>

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The Kegel–Wielandt \( \sigma \)-Problem: Reduction to Simple Groups

  • S. F. Kamornikov,
  • V. N. Tyutyanov

摘要

We reducethe solution of the Kegel–Wielandt $ \sigma $ -problemfor an arbitrary partition $ \sigma $ of the set of all primesto its solution in the class of all $ \sigma $ -completesimple nonabelian groups.We also give a sufficient criterion for the $ \sigma $ -subnormality of a subgroup in a finite group for a partition $ \sigma $ in which 2 and 3 belong to the same component.