4 papers
math.AG2026
Essential Dimension and Faithful Rank of Finite p-Gerbes
Tianzhi Yang
Let . We extend the Karpenko--Merkurjev theorem from classifying stacks of finite -groups to arbitrary finite gerbes whose geometric inertia groups…
math.AG2026
Fields of Moduli of Smooth del Pezzo Surfaces
Tianzhi Yang
The field of moduli of a variety over an algebraically closed field is defined as the fixed field of those automorphisms of for which . A fundamental q…
math.AG2026
On the Fields of Moduli of Curves of Genus Six
Tianzhi Yang
The field of moduli of a variety over an algebraically closed field is defined as the fixed field of those automorphisms of for which . A fundamental qu…
math.AG2026
Neutral representations in dimension and fields of moduli
Giulio Bresciani, Tianzhi Yang
A representation of an algebraic group induces a vector bundle . The representation of is neutral if, for every twisted form $\mathcal{V} \to \mathcal…