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Mapping class groups of surfaces of genus $\geq 3$ do not virtually surject to $\mathbb{Z}$. (arXiv:2008.10643v1 [math.GT]) http://arxiv.org/abs/2008.10643
Mapping class groups of surfaces of genus $\geq 3$ do not virtually surject to $\mathbb{Z}$. (arXiv:2008.10643v1 [math.GT]) http://arxiv.org/abs/2008.10643