1 citations · 5 across the 9 of their papers we have counts for
9 papers
D-modules and finite maps
Rolf Källström
We study the preservation of semisimplicity for holonomic D-modules with respect to the direct and inverse image of mainly finite maps of smooth varieties. A natural f…
Two extensions of Hilbert's finiteness theorem
Rolf Källström
Let be a noetherian graded algebra over a commutative -algebra , where is a commutative ring, and assume it is a module over a Lie algebroid ${\mathfrak g}_{A…
Stratifications of schemes using tangent vector fields
Rolf Källström
Let be a noetherian scheme over a field of characteristic 0, such that the residue field at its closed points are algebraic extensions of . Let ${\mathfrak g}_{X/k}\su…
D-modules with finite support are semi-simple
Rolf Källström
Let $(R, \mf, k_R)$ be regular local -algebra satisfying the weak Jacobian criterion, such that is an algebraic field extension. Let be the ring of -linear diff…
Hilbert series of modules over Lie algebroids
Rolf Källström, Yohannes Tadesse
We consider modules over Lie algebroids which are of finite type over a local noetherian ring . Using ideals such that ${\mathfrak g}_A \cdot…
The Zariski-Lipman conjecture for complete intersections
Rolf Källström
The tangential ramification locus is the subset of points in the ramification locus where the sheaf of relative vector fields fails to be local…