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TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY
 

Summary: TRANSACTIONS OF THE
AMERICAN MATHEMATICAL SOCIETY
Volume 00, Number 0, Pages 000­000
S 0002-9947(XX)0000-0
LOCAL MONODROMY OF p-DIVISIBLE GROUPS
JEFFREY D. ACHTER AND PETER NORMAN
Abstract. A p-divisible group over a field K admits a slope decomposition;
associated to each slope is an integer m and a representation Gal(K)
GLm(D), where D is the Qp-division algebra with Brauer invariant [].
We call m the multiplicity of in the p-divisible group. Let G0 be a p-
divisible group over a field k. Suppose that is not a slope of G0, but that
there exists a deformation of G in which appears with multiplicity one.
Assume that = (s - 1)/s for any natural number s > 1. We show that there
exists a deformation G/R of G0/k such that the representation Gal(Frac R)
GL1(D) has large image.
1. Introduction
Given a rational number [0, 1], where = r/s with gcd(r, s) = 1, let
H be the p-divisible group defined over Fp whose covariant DieudonnŽe module
is generated by a single generator e satisfying the relation (Fs-r
- V r

  

Source: Achter, Jeff - Department of Mathematics, Colorado State University

 

Collections: Environmental Sciences and Ecology; Mathematics