Surfaces de del Pezzo de degr\'e 4 sur un corps C1
Abstract
Sur toute surface de del Pezzo de degr\'e 4 sur un corps C1 de caract\'eristique z\'ero, tous les points rationnels sont R-\'equivalents. Plus g\'en\'eralement, ceci vaut sur tout corps parfait infini de caract\'eristique diff\'erente de 2. ---- On a del Pezzo surface of degree 4 over a characteristic zero C1-field, all rational points are R-equivalent.This more generally holds over any infinite perfect C1-field of characteristic different from 2.
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