Excerpt from Formes Quadratiques Et Multiplication Complexe: Deux Formules Fondamentales d'Après Kronecker
En 1885, d'autre part, la limite(1) n'avait été calculée par Kro necker que pour des valeurs réelles, d'ailleurs quelconques, de a, b, c rendant 4ac positif. C'est en 1889 seulement, après de nouvelles études sur les irrationnelles que, convaincu de la possibilité d'étendre ces résultats au cas où a, b, c sont complexes, il eut aussi la satisfaction d'y arriver (art. XIII).
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