Let K be a real abelian number field satisfying certain conditions and K n the n th layer of the cyclotomic Z p -extension of K. We study the relation between the p-Sylow subgroup of the ideal class group and that of the unit group module the cyclotomic unit group of K n . We give certain sufficient
On the group of modular units and the ideal class group
β Scribed by Tsuyoshi Itoh; Keiichi Komatsu
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 161 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0022-314X
No coin nor oath required. For personal study only.
β¦ Synopsis
J.-M. Kim, S. Bae and I.-S. Lee showed that there exists an isomorphism between the p-primary part of the ideal class group and p-primary part of the unit group modulo cyclotomic unit group in Q(ΞΆ p n ) + for all sufficiently large n under some conditions. In the present paper, we shall give an analogue of their result for modular units.
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We describe the upper and lower Lie nilpotency index of a modular group algebra β«ήβ¬G of some metabelian group G and apply these results to determine the nilpotency class of the group of units, extending certain results of Shalev without restriction to finite groups. A characterization of modular gro
Partially supported by the research funds of Ministero dell'Uni¨ersita e della Ricerca Scientifica e Tecnologica and by Grant 9300856.CT01 of Consiglio Nazionale delle Ricerche.
The object of this note is to discuss the properties of some polynomials on a . countable set of indeterminates attached to any finite group which generalize the Ε½ Eulerian functions of a group defined by P. Hall 1936, Quart. J. Math. 7, . 134α151 . In particular, I will define some classes of finit