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math.CV2026
Invariants and Automorphisms for slice regular functions : the octonionic case
Cinzia Bisi, Joerg Winkelmann
We study automorphisms and invariants for the algebra of octonions and octonionic slice regular functions .
math.CV2026
Multipoint Schwarz-Pick Lemma for the quaternionic case
Cinzia Bisi, Davide Cordella
Following ideas by Beardon, Minda and Baribeau, Rivard, Wegert in the context of the complex Schwarz-Pick Lemma, we use iterated hyperbolic difference quotients to prove a quaterni…
math.CV2025
Division algebras of slice-Nash functions
Cinzia Bisi, Antonio Carbone
The purpose of this paper is to introduce the notion of Nash functions in the context of slice regular functions of one quaternionic or octonionic variable. We begin with a detaile…
math.CV2024
Invariants and Automorphisms for slice regular functions
Cinzia Bisi, Joerg Winkelmann
Let be one of the following Clifford algebras : or . For the algebra , the automorphism group and its invariants are w…