Irreducible representations of certain nilpotent groups of finite rank (2412.00398v2)

Abstract: In the paper we study irreducible representations of some nilpotent groups of finite abelian total rank. The main result of the paper states that if a torsion-free minimax group $G$ of nilpotency class 2 admits a faithful irreducible representation $\varphi $ over a finitely generated field $k$ such that $chark \notin Sp(G)$ then there exist a subgroup $N$ and an irreducible primitive representation $\psi $ of the subgroup $N$ over $k$ such that the representation $\varphi $ is induced from $\psi $ and the quotient group $N/Ker\psi $ is finitely generated.