Funzioni regolari in un'algebra e cambiamenti di base
Fueter and Moisil’s definition of right regular functions in an algebra depends on the choice of a basis in . We determine here the group of linear transformations (changes of basis in ) which map the set of right regular functions into itself. is strictly related to the reducibility of as a direct sum of left ideals, and contains the subgroup of all similarity transformations with as a fixed-point. In particular, we show that in the case of quaternion and Clifford algebras.