6 citations · 15 across the 9 of their papers we have counts for
20 papers
Generalizations of quasielliptic curves
Cesar Hilario, Stefan Schröer
We generalize the notion of quasielliptic curves, which have infinitesimal symmetries and exist only in characteristic two and three, to a remarkable hierarchy of regular curves ha…
Sign involutions on para-abelian varieties
Jakob Bergqvist, Thuong Dang, Stefan Schröer
We study the so-called sign involutions on twisted forms of abelian varieties, and show that such a sign involution exists if and only if the class in the Weil--Châtelet group is a…
The inverse Galois problem for connected algebraic groups
Michel Brion, Stefan Schröer
We show that each connected group scheme of finite type over an arbitrary ground field is isomorphic to the component of the identity inside the automorphism group scheme of some p…
Albanese maps for open algebraic spaces
Stefan Schröer
We show that for each algebraic space that is separated and of finite type over a field, and whose affinization is connected and reduced, there is a universal morphism to a para-ab…
Loops on schemes and the algebraic fundamental group
Kay Rülling, Stefan Schröer
In this note we give a re-interpretation of the algebraic fundamental group for proper schemes that is rather close to the original definition of the fundamental group for topologi…
The resolution property holds away from codimension three
Siddharth Mathur, Stefan Schröer
The purpose of this paper is to verify a conjecture of Gross under mild hypothesis: all reduced, separated, and excellent schemes have the resolution property away from a closed su…