On Harder-Narasimhan strata in flag manifolds
arXiv:math/0304222
Abstract
This paper deals with a question of Fontaine and Rapoport which was posed in math.NT/0204293. There they asked for the determination of the index set of the Harder-Narasimhan vectors of the filtered isocrystals with fixed Newton- and Hodge vector. The aim of this paper is to give an answer to their question.
16 pages, LaTeX