On the Bieri-Neumann-Strebel-Renz invariants and limit groups over Droms RAAGs
英文摘要:
For a group $G$ that is a limit group over Droms RAAGs such that $G$ has trivial center, we show that $Σ^1(G) = \emptyset = Σ^1(G, \mathbb{Q})$. For a group $H$ that is a finitely presented residually Droms RAAG we calculate $Σ^1(H)$ and $Σ^2(H)_{dis}$. In addition, we obtain a necessary condition for $[χ]$ to belong to $Σ^n(H)$.
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