On $(\sigma ,\tau )$-derivations of group algebra as category characters

Aleksandr Alekseev, Andronick Arutyunov, Sergei Silvestrov

For the space of $(\sigma ,\tau )$-derivations of the group algebra $\mathbb{C}[G]$ of discrete countable group $G$, the decomposition theorem for the space of $(\sigma ,\tau )$-derivations, genera…