The ozone groups of PI Artin-Schelter regular algebras are abelian

Silu Liu, Quanshui Wu, Ruipeng Zhu

We prove that the ozone group of any PI Artin-Schelter regular algebra is abelian, which answers a question of Chan-Gaddis-Won-Zhang. For any Calabi-Yau PI Artin-Schelter regular a…