Publications and Preprints

Books

• Algebraic Geometry (with U. Görtz)

Publications

• Ordinariness in good reductions of Shimura varieties of PEL-type (ps)
  50 pages, Ann. Sci. de l'ENS 32, 1999, pp. 575 - 618.
• Congruence Relations on some Shimura varieties (ps, pdf)
  34 pages, Journal f.d. reine und angewandte Mathematik (Crelle) 524, 2000, pp. 43 - 71.
• The dimension of Oort strata of Shimura varieties of PEL-type (ps)
  27 pages, in: C. Faber, G. van der Geer, F. Oort (Eds.): The moduli space of abelian varieties, Progr. in Math. 195, Birkhäuser (2001), pp. 441-471.
• Congruence Relations in the Siegel case (pdf)
  22 pages, in: D. Bakic, P. Pandzic, G. Peskir (Eds.): Functional Analysis VII, Various Publication Series 46,
  University of Aarhus 2002, pp. 193-218.
• On Tannakian duality over valuation rings (ps, pdf)
  31 pages, Journal of Algebra 282, 2004, pp. 575 - 609.
• Discrete invariants of varieties in positive characteristic (with B. Moonen) (ps, pdf)
  35 pages, Int. Math. Res. Notices 2004:72, 2004, pp. 3855 - 3903
• Congruence Relations for Shimura varieties associated to some unitary groups (with O. Bültel) (pdf)
  31 pages, J. Inst. Math. Jussieu 5 (2006), 229 - 261
  
• On the Signature Character of Representations of the p-adic general linear group (with C. Boyallian) (ps)
  42 pages, Journal of Functional Analysis 239 (2006), 375 - 413
• The genus of the endomorphisms of a supersingular elliptic curve (pdf)
  22 pages, Astérisque 312 (2007), 25-47
• Calculation of representation densities (pdf)
  12 pages, Astérisque 312 (2007), 179-190
• The connection to Eisenstein series (with M. Rapoport) (pdf)
  18 pages, Astérisque 312 (2007), 191-208.
• The local Langlands correspondence for GL(n) over p-adic fields (preprint version),
  73 pages, in School on Automorphic Forms on GL(n) (ed. by L. Göttsche, G. Harder, M.S. Raghunathan), ICTP Lecture Notes 21 (2008), 237 - 320.
• De Rham Cohomology of varieties over fields of positive characteristic
  in "Higher-dimensional geometry over finite fields" (ed. by D. Kaledin, Y. Tschinkel), IOS Press (2008), 269-314.
• Purity of level m stratifications (with M.-H. Nicole, A. Vasiu)
  Ann. Sci. de l"ENS 43 (2010), 927-957.
• The supersingular locus of the Shimura variety of GU(1,n-1) II (with I. Vollaard)
  Inventiones Math. 184 (2011), 591-627.
• Algebraic zip data (with R. Pink, P. Ziegler)
  Documenta Math. 16 (2011), 253-300.
• Ekedahl-Oort strata and Newton strata for Shimura varieties of PEL type (with E. Viehmann)
  58 pages (new version), February 2012, to appear in Math. Annalen.

Preprints

• F-zips with additional structures (with R. Pink, P. Ziegler)
  49 pages, August 2012, submitted
• Bruhat strata and F-zips with additional structure
  31 pages, Februar 2013, submitted
• Bruhat strata for Shimura varieties of PEL type
  16 pages, preprint March 2013, submitted