7 citations · 7 across the 3 of their papers we have counts for
3 papers
math.AG2018
Quasi-symmetric functions and the Chow ring of the stack of expanded pairs
Jakob Oesinghaus
We show that the Hopf algebra of quasi-symmetric functions arises naturally as the integral Chow ring of the algebraic stack of expanded pairs originally described by J. Li, using…
math.AG2018
Geometric Brauer residue via root stacks
Jakob Oesinghaus
We reinterpret the residue map for the Brauer group of a smooth variety using a root stack construction and Weil restriction for algebraic stacks, and apply the result to find a ge…
math.AG2017★ 7 cited
Conic bundles and iterated root stacks
Jakob Oesinghaus
We generalize a classical result by V. G. Sarkisov about standard models for conic bundles to the case of a not necessarily algebraically closed perfect field, using iterated root…