The invariant of $PGU(3,q)$ in the Hermitian function field

Gatti Barbara, Ghiandoni Francesco, Gábor Korchmáros

Let $F=F|\mathbb{K}$ a be function field over an algebraically closed constant field $\mathbb{K}$ of positive characteristic $p$. For a $\mathbb{K}$-automorphism group $G$ of $F$,…