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Autor:
Lin, Juemin, Wu, Jianchun
The mapping torus induced by an automorphism $\phi$ of the free abelian group $\mathbb{Z}^n$ is a semi-direct product $G=\mathbb{Z}^n\rtimes_\phi \mathbb{Z}$. We show that whether the rank of $G$ is equal to $n+1$ is decidable. As a corollary, the ra
Externí odkaz:
http://arxiv.org/abs/2306.07602
