Nous présentons une construction élémentaire d'une surface lisse et projective sur un corps de nombres quelconque qui constitue un contre-exemple au principe de Hasse et possède l'ensemble de Brauer-Manin infini. La surface est munie d'un morphisme surjectif vers une courbe avec un seul -point tel que l'unique fibre rationnelle, qui géométriquement est l'union de droites projectives, a un point adélique et le groupe de Brauer trivial, mais pas de -points.
We give an elementary construction of a smooth and projective surface over an arbitrary number field that is a counterexample to the Hasse principle but has infinite étale Brauer-Manin set. Our surface has a surjective morphism to a curve with exactly one -point such that the unique -fibre is geometrically a union of projective lines with an adelic point and the trivial Brauer group, but no -point.
DOI : 10.24033/asens.2226
Keywords: Hasse principle, weak approximation, Brauer-Manin obstruction.
Mot clés : principe de Hasse, approximation faible, obstruction de Brauer-Manin.
@article{ASENS_2014__47_4_765_0, author = {Harpaz, Yonatan and Skorobogatov, Alexei N.}, title = {Singular curves and the \'etale {Brauer-Manin} obstruction for surfaces}, journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure}, pages = {765--778}, publisher = {Soci\'et\'e Math\'ematique de France. Tous droits r\'eserv\'es}, volume = {Ser. 4, 47}, number = {4}, year = {2014}, doi = {10.24033/asens.2226}, mrnumber = {3250063}, zbl = {1308.14024}, language = {en}, url = {http://www.numdam.org/articles/10.24033/asens.2226/} }
TY - JOUR AU - Harpaz, Yonatan AU - Skorobogatov, Alexei N. TI - Singular curves and the étale Brauer-Manin obstruction for surfaces JO - Annales scientifiques de l'École Normale Supérieure PY - 2014 SP - 765 EP - 778 VL - 47 IS - 4 PB - Société Mathématique de France. Tous droits réservés UR - http://www.numdam.org/articles/10.24033/asens.2226/ DO - 10.24033/asens.2226 LA - en ID - ASENS_2014__47_4_765_0 ER -
%0 Journal Article %A Harpaz, Yonatan %A Skorobogatov, Alexei N. %T Singular curves and the étale Brauer-Manin obstruction for surfaces %J Annales scientifiques de l'École Normale Supérieure %D 2014 %P 765-778 %V 47 %N 4 %I Société Mathématique de France. Tous droits réservés %U http://www.numdam.org/articles/10.24033/asens.2226/ %R 10.24033/asens.2226 %G en %F ASENS_2014__47_4_765_0
Harpaz, Yonatan; Skorobogatov, Alexei N. Singular curves and the étale Brauer-Manin obstruction for surfaces. Annales scientifiques de l'École Normale Supérieure, Série 4, Tome 47 (2014) no. 4, pp. 765-778. doi : 10.24033/asens.2226. http://www.numdam.org/articles/10.24033/asens.2226/
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