2010/09/20 by Preda Mihailescu, Mihailescu, Preda
Mathematics · #11R23 #11R27 #FOS: Mathematics #Number Theory (math.NT) #math.NT #msc:11R23 #msc:11R27
paper · pdf · doi:10.48550/arxiv.1009.3729
Withdrawn - the material was expanded in individual papers on the Conjectures of Leopoldt, Iwasawa and Gross, all on arxive after 2014
arxiv created 2015/02/17 · arxiv updated 2015/02/18
In Part I we review some specific properties of the Λ-modules in Iwasawa theory, which add structure to the general properties of Noetherian Λ-torsion modules. Part II deals with Kummer theory and gives a detailed construction of the Iwasawa linear space. This provides a new, simpler proof of the conjectures of Leopoldt and Gross for CM extensions. Using a construction of Thaine, we then prove that λ+ = 0 in these fields, thus proving a part of Greenberg's conjecture - the fact μ+ = 0 still has to be shown. In the Appendices we give some elementary partial proofs of the main facts proved using Iwasawa's linear space. These two papers do not give proofs for non CM fields, and the reader interested in methods for dealing with this case is referred to the "T and T^*" paper on this arxive. This methods will be integrated in the Snoqit series.