1 citations · 1 across the 1 of their papers we have counts for
3 papers
math.AG2019
Rees algebras of additive group actions
Adrien Dubouloz, Isac Hedén, Takashi Kishimoto
We establish basic properties of a sheaf of graded algebras canonically associated to every relative affine scheme endowed with an action of the additive grou…
math.AG2017★ 1 cited
Equivariant extensions of Ga-torsors over punctured surfaces
Adrien Dubouloz, Isac Hedén, Takashi Kishimoto
Motivated by the study of the structure of algebraic actions the additive group on affine threefolds X, we consider a special class of such varieties whose algebraic quotient morph…
math.AG2017
The decomposition groups of plane conics and plane rational cubics
Tom Ducat, Isac Hedén, Susanna Zimmermann
The decomposition group of an irreducible plane curve is the subgroup of birational maps which restrict to a…