All Questions

Let $G$ be a finite abelian group, $X = (x_g)_{g \in G}$ be a vector of variables. Set for $g \in G$: $$\tau_g(X) := \frac{1}{|G|} \sum_{\rho \text{ irred. }} \chi_{\rho}(-g) \exp(\sum_{s \in G} \chi_{...