Nagoya Mathematical Journal

Truncated Euler systems over imaginary quadratic fields

Soogil Seo
Source: Nagoya Math. J. Volume 195 (2009), 97-111.

Abstract

Let $K$ be an imaginary quadratic field and let $F$ be an abelian extension of $K$. It is known that the order of the class group $\textup{Cl}_{F}$ of $F$ is equal to the order of the quotient $U_{F}/El_{F}$ of the group of global units $U_{F}$ by the group of elliptic units $El_{F}$ of $F$. We introduce a filtration on $U_{F}/El_{F}$ 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 provide evidence for the conjecture using Iwasawa theory.

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Primary Subjects: 11R23, 11R27, 11R29
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Links and Identifiers

Permanent link to this document: http://projecteuclid.org/euclid.nmj/1252934373
Zentralblatt MATH identifier: 05611431
Mathematical Reviews number (MathSciNet): MR2552955

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