Lambda actions of rings of integers
Number Theory
2011-05-25 v1 K-Theory and Homology
Abstract
Let O be the ring of integers of a number field K. For an O-algebra R which is torsion free as an O-module we define what we mean by a Lambda_O-ring structure on R. We can determine whether a finite etale K-algebra E with Lambda_O-ring structure has an integral model in terms of a Deligne-Ribet monoid of K. This a commutative monoid whose invertible elements form a ray class group.
Cite
@article{arxiv.1105.4662,
title = {Lambda actions of rings of integers},
author = {James Borger and Bart de Smit},
journal= {arXiv preprint arXiv:1105.4662},
year = {2011}
}
Comments
This preprint is a preliminary version dating from 2006. We are making it available in this form because some people would like to cite it now. The final version should be available before long