2 papers
math.OA2026
Quadratic polynomials preserving free infinite divisibility
Wiktor Ejsmont, Franz Lehner, Mihai Popa +1
We characterize non-commutative polynomials of degree 2 which preserve free infinite divisibility as self-adjoint Lie polynomials of degree 2. This extends previous results which c…
math.FA2025
The Poisson Type Operators on the Double Fock Space of Type B
Wiktor Ejsmont, Patrycja Hęćka-Jędraszczyk
The double Fock space of type B was introduced in 2023 by Bożejko and Ejsmont (\cite{BE23}). In this article, we show the acting of Poisson type operators in that space. For this p…