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Autres démonstrations du même Théorème

In: Collected Works of Charles François Sturm

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  • C. Sturm

Abstract

Abstrait Les nouvelles démonstrations que je vais donner du théorème de M. Cauchy, s’éloignent moins que la précédente de la méthode que cet illustre géomètre a suivie dans son mémoire; elles sont fondées sur la décomposition en facteurs de la fonction qu’on égale à zéro. Je vais d’abord démontrer ce théorème pour une équation algébrique de degré quelconque en admettant comme déjà connu ce principe que toute équation algébrique a toujours une racine soit réelle soit imaginaire de la forme $$ a + b\sqrt { - 1} $$ , d’où l’on conclut immédiatement qu’une équation du mleme degré a m racines.

Suggested Citation

  • C. Sturm, 2009. "Autres démonstrations du même Théorème," Springer Books, in: Jean-Claude Pont (ed.), Collected Works of Charles François Sturm, pages 486-504, Springer.
  • Handle: RePEc:spr:sprchp:978-3-7643-7990-2_32
    DOI: 10.1007/978-3-7643-7990-2_32
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