Sei X eine p-divisible Gruppe über Spf Zp. Wir untersuchen das zugrundeliegende reduzierte Unterschema des formalen Schemas M über Zp, welches den Funktor der Isomorphieklassen von p-divisiblen Gruppen mit Quasiisogenien zu X darstellt. Wir führen eine Stratifizierung der Zusammenhangskomponenten von M durch abgeschlossene Unterfunktoren, welche darstellbar sind durch projektive Schemata. Insbesondere finden wir ein projektives Schema Y, dessen zugrundeliegendes reduzierte Unterschema isomorph ist zum zugrundeliegenden reduzierten Unterschema jeder Zusammenhangskomponente von M. Wir bestimmen den Tangentialraum an Y und den glatten Ort von Y. Desweiteren führen wir eine algebraische Gruppe mit Gruppenwirkung auf Y ein, deren Orbiten genau d...
Let G be a connected algebraic group over an algebraically closed field k. If char(k)=0, then there ...
Let F(r, d) denote the moduli space of algebraic foliations of codimension one and degree d in compl...
RésuméL'étude des variétés d'algèbres de Lie Lm sur un corps algébriquement clos et de caractéristiq...
Dedicated to Vladimir Morozov on the 100th anniversary of his birth.We consider the variety of nilpo...
We prove the geometrical Satake isomorphism for a reductive group defined over F=k((t)), and split ...
We give a geometric interpretation of the Weil representation of the metaplectic group, placing it i...
AbstractLet V be a 2n-dimensional vector space (n⩾1) over a field K equipped with a nondegenerate al...
Let F be a coherent rank 2 sheaf on a scheme Y in P^n of dimension at least two. In this paper we st...
This thesis is devoted to two aspects of the p-adic local Langlands program and p-adic local-global ...
AbstractWe prove results about the intersection of the p-rank strata and the boundary of the moduli ...
AbstractFor odd primes p, we examine Ĥ∗(Aut(F2(p−1));Z(p)), the Farrell cohomology of the group of ...
Let G be a connected reductive group over an algebraically closed field k of characteristic p ≥ 0. L...
AbstractLet G be a p-group of maximal class of order pm, p an odd prime, and m≥4. In this work we re...
AbstractLet (L,∂) be a differential graded Lie algebra over the prime field Fp. There exists an isom...
Let G^v be a complex simple algebraic group. We describe certain morphisms of G^v (O)-equivariant c...
Let G be a connected algebraic group over an algebraically closed field k. If char(k)=0, then there ...
Let F(r, d) denote the moduli space of algebraic foliations of codimension one and degree d in compl...
RésuméL'étude des variétés d'algèbres de Lie Lm sur un corps algébriquement clos et de caractéristiq...
Dedicated to Vladimir Morozov on the 100th anniversary of his birth.We consider the variety of nilpo...
We prove the geometrical Satake isomorphism for a reductive group defined over F=k((t)), and split ...
We give a geometric interpretation of the Weil representation of the metaplectic group, placing it i...
AbstractLet V be a 2n-dimensional vector space (n⩾1) over a field K equipped with a nondegenerate al...
Let F be a coherent rank 2 sheaf on a scheme Y in P^n of dimension at least two. In this paper we st...
This thesis is devoted to two aspects of the p-adic local Langlands program and p-adic local-global ...
AbstractWe prove results about the intersection of the p-rank strata and the boundary of the moduli ...
AbstractFor odd primes p, we examine Ĥ∗(Aut(F2(p−1));Z(p)), the Farrell cohomology of the group of ...
Let G be a connected reductive group over an algebraically closed field k of characteristic p ≥ 0. L...
AbstractLet G be a p-group of maximal class of order pm, p an odd prime, and m≥4. In this work we re...
AbstractLet (L,∂) be a differential graded Lie algebra over the prime field Fp. There exists an isom...
Let G^v be a complex simple algebraic group. We describe certain morphisms of G^v (O)-equivariant c...
Let G be a connected algebraic group over an algebraically closed field k. If char(k)=0, then there ...
Let F(r, d) denote the moduli space of algebraic foliations of codimension one and degree d in compl...
RésuméL'étude des variétés d'algèbres de Lie Lm sur un corps algébriquement clos et de caractéristiq...