Verschärfung der notwendigen Bedingungen für die Existenz von ungeraden vollkommenen Zahlen

  title={Versch{\"a}rfung der notwendigen Bedingungen f{\"u}r die Existenz von ungeraden vollkommenen Zahlen},
  author={Ullrich K{\"u}hnel},
  journal={Mathematische Zeitschrift},
  • Ullrich Kühnel
  • Published 1 December 1950
  • Mathematics
  • Mathematische Zeitschrift
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