Showing 2016Show all
3 papers · 1 filter
math.RA2016
Differential Embedding Problems over Complex Function Fields
Annette Bachmayr, David Harbater, Julia Hartmann +1
We introduce the notion of differential torsors, which allows the adaptation of constructions from algebraic geometry to differential Galois theory. Using these differential torsor…
math.AG2016
Torsors for Difference Algebraic Groups
Annette Bachmayr, Michael Wibmer
We introduce a cohomology set for groups defined by algebraic difference equations and show that it classifies torsors under the group action. This allows us to compute all torsors…
math.AC2016
New classes of parameterized differential Galois groups
Annette Bachmayr
This paper is on the inverse parameterized differential Galois problem. We show that surprisingly many groups do not occur as parameterized differential Galois groups over K(x) eve…