2 papers
math.AG2025
Does the Grothendieck ring of varieties contain nilpotent elements?
Anna Bot, Alessio Cangini, Immanuel van Santen
We show that a ring closely related to the Grothendieck ring of varieties has nilpotent elements, provided that the characteristic of the ground field is equal to or at least…
math.AG2021
Real forms of some Gizatullin surfaces and Koras-Russell threefolds
Jérémy Blanc, Anna Bot, Pierre-Marie Poloni
We describe the real forms of Gizatullin surfaces of the form and of Koras-Russell threefolds of the first kind. The former admit zero, two, three, four or six isomorphis…