14 citations · 61 across the 22 of their papers we have counts for
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math.AG2020
Almost-simple affine difference algebraic groups
Michael Wibmer
Affine difference algebraic groups are a generalization of affine algebraic groups obtained by replacing algebraic equations with algebraic difference equations. We show that the i…
math.AG2020
The differential Galois group of the rational function field
Annette Bachmayr, David Harbater, Julia Hartmann +1
We determine the absolute differential Galois group of the field of rational functions: It is the free proalgebraic group on a set of cardinality . Th…
math.AG2020★ 3 cited
On the dimension of systems of algebraic difference equations
Michael Wibmer
We introduce a notion of dimension for the solution set of a system of algebraic difference equations that measures the degrees of freedom when determining a solution in the ring o…