Les récents progrès sur le problème de la 2-tour de Hilbert des corps de nombres portent sur l’infinitude – en particulier pour les corps quadratiques – quand le groupe des classes a un grand 4-rang. Généralisant à tout nombre premier , nous utilisons les inégalités de type Golod-Safarevic afin d’analyser la contribution du -rang du groupe des classes à l’étude de la -tour de Hilbert. Nous apportons également des résultats partiels en direction de l’infinitude de le -tour de Hilbert des corps quadratiques réels lorsque que le -rang du groupe des classes vaut .
Much recent progress in the 2-class field tower problem revolves around demonstrating infinite such towers for fields – in particular, quadratic fields – whose class groups have large 4-ranks. Generalizing to all primes, we use Golod-Safarevic-type inequalities to analyse the source of the -rank of the class group as a quantity of relevance in the -class field tower problem. We also make significant partial progress toward demonstrating that all real quadratic number fields whose class groups have a 2-rank of 5 must have an infinite 2-class field tower.
Keywords: Hilbert class field towers
Mot clés : Tours de Hilbert des corps de nombres
@article{AMBP_2014__21_2_57_0, author = {Maire, Christian and McLeman, Cam}, title = {On $p^2${-Ranks} in the {Class} {Field} {Tower} {Problem}}, journal = {Annales math\'ematiques Blaise Pascal}, pages = {57--68}, publisher = {Annales math\'ematiques Blaise Pascal}, volume = {21}, number = {2}, year = {2014}, doi = {10.5802/ambp.342}, mrnumber = {3322615}, language = {en}, url = {http://www.numdam.org/articles/10.5802/ambp.342/} }
TY - JOUR AU - Maire, Christian AU - McLeman, Cam TI - On $p^2$-Ranks in the Class Field Tower Problem JO - Annales mathématiques Blaise Pascal PY - 2014 SP - 57 EP - 68 VL - 21 IS - 2 PB - Annales mathématiques Blaise Pascal UR - http://www.numdam.org/articles/10.5802/ambp.342/ DO - 10.5802/ambp.342 LA - en ID - AMBP_2014__21_2_57_0 ER -
%0 Journal Article %A Maire, Christian %A McLeman, Cam %T On $p^2$-Ranks in the Class Field Tower Problem %J Annales mathématiques Blaise Pascal %D 2014 %P 57-68 %V 21 %N 2 %I Annales mathématiques Blaise Pascal %U http://www.numdam.org/articles/10.5802/ambp.342/ %R 10.5802/ambp.342 %G en %F AMBP_2014__21_2_57_0
Maire, Christian; McLeman, Cam. On $p^2$-Ranks in the Class Field Tower Problem. Annales mathématiques Blaise Pascal, Tome 21 (2014) no. 2, pp. 57-68. doi : 10.5802/ambp.342. http://www.numdam.org/articles/10.5802/ambp.342/
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