Einige Eigenschaften der Parameterideale und ihre Anwendungen für Buchsbaum Ringe
Evolutions, symbolic squares, and Fitting ideals.
Factorial extensions of regular local rings and invariants of finite groups.
Fiber cones and the integral closure of ideals.
Let (R,m) be a Noetherian local ring and let I C R be an ideal. This paper studies the question of when m I is integrally closed. Particular attention is focused on the case R is a regular local ring and I is a reduced ideal. This question arose through a question posed by Eisenbud and Mazur on the existence of evolutions.
Formes quadratiques sur les anneaux semi-locaux réguliers
Gabrielov's Rank Condition is Equivalent to an Inequality of Reduced Orders.
Global Dimension of Differential Operator Rings. IV - Simple Modules.
Groupes de Picard et séries formelles
Japanische und ausgezeichnete lokale Ringe.
Local derivations for quotient and factor algebras of polynomials
We describe all Kadison algebras of the form , where k is an algebraically closed field and S is a multiplicative subset of k[t]. We also describe all Kadison algebras of the form k[t]/I, where k is a field of characteristic zero.
On a functional equation arising from hyperbolic geometry.
On a result of avramov.
On h-regular grades algebras of characteristic p > 0
On proximity relations for valuations dominating a two-dimensional regular local ring.
The purpose of this paper is to define a new numerical invariant of valuations centered in a regular two-dimensional regular local ring. For this, we define a sequence of non-negative rational numbers δν = {δν(j)}j ≥ 0 which is determined by the proximity relations of the successive quadratic transformations at the points determined by a valuation ν. This sequence is characterized by seven combinatorial properties, so that any sequence of non-negative rational numbers having the above properties...
On Symmetric Algebras which are Cohen Macaulay.
On the approximation property of excellent rings.
On the canonical element conjecture II.
On the Finite Generation of Symbolic Blow-Ups.
On the Grade of Some Ideals.
On the hereditary -Buchsbaum property for ideals and .