Add to ORKGRigidity criteria for a finite dimensional associative or Lie algebra of positive characteristic are given. A geometrically rigid algebra may have deformations with nontrivial infinitesimals which may be interpreted as obstructions to integrating infinitesimal automorphisms. A group scheme theoretic nature of those obstructions is revealed. For each affine group scheme G of finite type over the ground field an invariantly defined G-module Obs(G) is introduced and formal properties of the functor GObs(G) are studied. © 1995
The aim of this paper is to give an overview and to compare the different deformation theories of al...
We explore the integration of representations from a Lie algebra to its algebraic group in positive ...
AbstractThe smoothness of a morphism between noetherian schemes can be recognized in terms of the in...
Rigidity criteria for a finite dimensional associative or Lie algebra of positive characteristic are...
AbstractRigidity criteria for a finite dimensional associative or Lie algebra of positive characteri...
We show that the classification of simple finite group schemes over an alge- braically closed field ...
The smoothness of a morphism between noetherian schemes can be recognized in terms of the induced ma...
One of the most fundamental results underlying the theory of abelian varieties is "rigidity" -- that...
The Inverse Problem of Galois Theory is discussed. In a specific form, the problem asks whether ever...
ABSTRACT. We say that a Lie algebra g quasi-state rigid if every Ad-invariant Lie quasi-state on it ...
AbstractLet g denote a semisimple Lie algebra over an algebraically closed field k of characteristic...
AbstractA group code structure of a linear code is a description of the code as one-sided or two-sid...
We compare deformations of algebras to deformations of schemes in the setting of invariant theory. O...
A finitely generated group Γ is called representation rigid (briefly, rigid) if for every n , Γ has ...
This talk will be about the representations of a finite group scheme G defined over a field k of pos...
The aim of this paper is to give an overview and to compare the different deformation theories of al...
We explore the integration of representations from a Lie algebra to its algebraic group in positive ...
AbstractThe smoothness of a morphism between noetherian schemes can be recognized in terms of the in...
Rigidity criteria for a finite dimensional associative or Lie algebra of positive characteristic are...
AbstractRigidity criteria for a finite dimensional associative or Lie algebra of positive characteri...
We show that the classification of simple finite group schemes over an alge- braically closed field ...
The smoothness of a morphism between noetherian schemes can be recognized in terms of the induced ma...
One of the most fundamental results underlying the theory of abelian varieties is "rigidity" -- that...
The Inverse Problem of Galois Theory is discussed. In a specific form, the problem asks whether ever...
ABSTRACT. We say that a Lie algebra g quasi-state rigid if every Ad-invariant Lie quasi-state on it ...
AbstractLet g denote a semisimple Lie algebra over an algebraically closed field k of characteristic...
AbstractA group code structure of a linear code is a description of the code as one-sided or two-sid...
We compare deformations of algebras to deformations of schemes in the setting of invariant theory. O...
A finitely generated group Γ is called representation rigid (briefly, rigid) if for every n , Γ has ...
This talk will be about the representations of a finite group scheme G defined over a field k of pos...
The aim of this paper is to give an overview and to compare the different deformation theories of al...
We explore the integration of representations from a Lie algebra to its algebraic group in positive ...
AbstractThe smoothness of a morphism between noetherian schemes can be recognized in terms of the in...