On epimorphisms of spherical Moufang buildings
arXiv:1107.4266
Abstract
In this paper we classify the the epimorphisms of irreducible spherical Moufang buildings (of rank at least 2) defined over a field. As an application we characterize indecomposable epimorphisms of these buildings as those epimorphisms arising from R-buildings.
revised version, 44 pages