12 citations · 30 across the 16 of their papers we have counts for
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math.RT2019★ 12 cited
The Extension Dimension of Abelian Categories
Junling Zheng, Xin Ma, Zhaoyong Huang
Let $\A$ be an abelian category having enough projective objects and enough injective objects. We prove that if $\A$ admits an additive generating object, then the extension dimens…
math.DS2019★ 4 cited
A generalized type semigroup and dynamical comparison
Xin Ma
In this paper, we construct a semigroup associated to an action of countable discrete group on a compact Hausdorff space, that can be regarded as a higher dimensional generalizatio…