Zunwu He

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20202026

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math.GR2020

Remarks on the actions of some groups on the product of Hadamard spaces

Zunwu He

For a product of Hadamard spaces $X = X_{1} \times X_{2}$ on which some group $G \subset I s (X_{1}) \times I s (X_{2})$ acting, G. Link arXiv:1107.3755v1 introduced the growth rate $δ_{θ}$ of slope…

math.GR2020

Large quotients of group actions with a contracting element

Zunwu He, Jinsong Liu, Wenyuan Yang

For any proper action of a non-elementary group $G$ on a proper geodesic metric space, we show that if $G$ contains a contracting element, then there exists a sequence of proper qu…