A. van Daele

collaborators

3 papers

math.RA2024

Single sided multiplier Hopf algebras

Alfons Van Daele

Let $A$ be a non-degenerate algebra over the complex numbers and $Δ$ a homomorphism from $A$ to the multiplier algebra $M (A \otimes A)$ . Consider the linear maps $T_{1}$ and $T_{2}$ fro…

math.RA2024

Reflections on coproducts for non-unital algebras

Alfons Van Daele

A coproduct on a vector space $A$ is defined as a linear map $Δ : A \to A \otimes A$ satisfying coassociativity $(Δ \otimes ι) Δ = (ι \otimes Δ) Δ$ . We use $ι$ for the identity map. If $G$ is…

math.FA2023

Polynomial functions for locally compact group actions

Magnus B. Landstad, Alfons Van Daele

Consider a locally compact group $G$ and a locally compact space $X$ . A local right action of $G$ on $X$ is a continuous map $(x, p) \mapsto x \cdot p$ from an open subset $Γ$ of the…