More explicitly, let $G$ be given by the additive group $\mathbb{Z}/2\mathbb{Z} \times \mathbb{Z}/2\mathbb{Z}$.
Question: Can there be an irreducible linear representation $\rho: G \to \operatorname{GL}(\mathbb{C}^2)$?
I am trying to construct such an example, but as time flies, I suspect that there might be none. Could you please verify my presumption and explain the reason? Thank you!
Irreducible representations of abelian groups are one-dimensional.