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arXiv · 1409.2782

Approximation faible pour les 0-cycles sur un produit de vari\'et\'es rationnellement connexes

Yongqi Liang
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Abstract

Consider weak approximation for 0-cycles on a smooth proper variety defined over a number field, it is conjectured to be controlled by its Brauer group. Let $X$ be a Ch\^atelet surface or a smooth compactification of a homogeneous space of a connected linear algebraic group with connected stabilizer. Let $Y$ be a rationally connected variety. We prove that weak approximation for 0-cycles on the product $X\times Y$ is controlled by its Brauer group if it is the case for $Y$ after every finite extension of the base field. We do not suppose the existence of 0-cycles of degree $1$ neither on $X$ nor on $Y$.

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Yongqi Liang. 2014-09-09. Approximation faible pour les 0-cycles sur un produit de vari\'et\'es rationnellement connexes. https://arxiv.org/abs/1409.2782

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