Abstract
It is known that the order of the class group Cl K of the real abelian field K is essentially equal to the order of the quotient E K/C K of the global units E K by the circular units C K of K. However, the structures of these two groups are usually very different. Motivated by the theory of circular distributions and the special units of Rubin, we introducea filtration to E K made from the so-called truncated Euler systems and conjecture that the associated graded module is isomorphic, as a Galois module, to the class group. We use Euler systems to give evidence for this conjecture.
Original language | English |
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Pages (from-to) | 53-71 |
Number of pages | 19 |
Journal | Journal fur die Reine und Angewandte Mathematik |
Issue number | 614 |
DOIs | |
Publication status | Published - 2008 Dec 19 |
Bibliographical note
Funding Information:This work was supported by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), KRF-2006-331-C00003.
All Science Journal Classification (ASJC) codes
- Mathematics(all)
- Applied Mathematics