Principe local global pour les espaces lin\'eaires sur les intersections de deux quadriques

Abstract

In arXiv:1410.5671, Jahnel and Loughran prove the local global principle for existence of linear spaces of dimension r on smooth complete intersections of two quadrics in projective space of dimension 2r+2. We present an alternative proof of a slightly more general result. ----- Dans arXiv:1410.5671, Jahnel et Loughran \'etablissent un principe local-global pour l'existence d'espaces lin\'eaires de dimension r dans les intersections compl\`etes lisses de deux quadriques dans un espace projectif de dimension 2r+2. On donne une d\'emonstration alternative d'un r\'esultat un peu plus g\'en\'eral.

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