3 papers
math.AG2026
Jordan property of birational automorphism groups of surfaces and birational permutations
Alexandr Zaitsev
We prove that the group of birational automorphisms of a geometrically irreducible algebraic surface over a finite field is Jordan. We show that the analogous statement fails in hi…
math.AG2026
Finite subgroups of Cremona group of rank 3 over the field of rational numbers
Alexandr Zaitsev
We give an explicit bound on orders of finite subgroups of Cremona group of rank three over .
cond-mat.mtrl-sci2025
Engineering NV Centers via Hydrogen-Driven Defect Chemistry in CVD Diamonds for Quantum Applications: NVHx Dissociations into NV, Origin of 468nm Center, and Cause of Brown Coloration
Mubashir Mansoor, Kamil Czelej, Sally Eaton-Magaña +23
Achieving high NV center conversion efficiency remains a key challenge in advancing diamond-based quantum technologies. The generally accepted mechanism for NV formation is that ir…