2 papers
math.AC2025
On the tame isotropy group of a derivation
Angelo Bianchi, Adriana Freitas, Marcelo Veloso
We introduce the tame isotropy group of a derivation of a polynomial ring. We study this group for certain triangular derivations up to three variables, for simple derivations in t…
math.RT2025
Integral bases for twisted multiloop algebras with diagram automorphism actions
Angelo Bianchi, Samuel Chamberlin
We construct integral forms for the universal enveloping algebras of certain twisted multiloop algebras and explicit integral bases for these integral forms.