2 papers
math.AG2025
Birational Geometry of sextic del Pezzo surfaces
Elias Kurz, Egor Yasinsky
We study the biregular and birational geometry of degree 6 del Pezzo surfaces with Picard number 1, defined over an arbitrary perfect field. Using Galois cohomology techniques, we…
math.AG2025
A determinant on birational maps of Severi-Brauer surfaces
Elias Kurz
We define a determinant on the group of automorphisms of non-trivial Severi-Brauer surfaces over a perfect field. Using the generators and relations, we extend this determinant to…