A differential criterion for complete intersections.
A -minimal model for principal -bundles
Sullivan associated a uniquely determined to any simply connected simplicial complex . This algebra (called minimal model) contains the total (and exactly) rational homotopy information of the space . In case is the total space of a principal -bundle, ( is a compact connected Lie-group) we associate a -equivariant model , which is a collection of “-homotopic” ’s with -action. will, in general, be different from the Sullivan’s minimal model of the space . contains the total rational...
A note on characterizations of rings of constants with respect to derivations
Let A be a commutative algebra without zero divisors over a field k. If A is finitely generated over k, then there exist well known characterizations of all k-subalgebras of A which are rings of constants with respect to k-derivations of A. We show that these characterizations are not valid in the case when the algebra A is not finitely generated over k.
A note on Nakai’s conjecture for the ring
Aktionen kompakter Liegruppen auf lokalen Räumen.
Algebra Structure on Minimal Resolutions of Gorenstein Rings of Embedding Codimension Four.
An Algebraic Approach to the Residues in Algebraic Geometry.
«Autopsie d'un meurtre» dans l'homologie d'une algèbre de chaînes
Cohomologie différentiable des algèbres de polynômes de leurs localisées ou de leurs complétées, et des variétés
Conjecture Jacobienne et opérateurs différentiels
Constructions effectives de vecteurs cycliques pour un D-module
Cotangent Functors of Curve Singularities.
Dénombrement des types de K-homotopie. Théorie de la déformation
Der Residuenkomplex in der lokalen algebraischen und analytischen Geometrie.
Derivations satisfying polynomial identities
Differential characters and characteristic polynomial of Frobenius.
Differential characters of abelian varieties over p-adic fields.
Differential rings in which any ideal is differential
Differentielle Eigenschaften der Lokalisierungen analytischer Algebren.
Evolutions, symbolic squares, and Fitting ideals.