Higson Compactification and Dimension Raising
Higson Compactification and Dimension Raising
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Higson 紧凑化和维度提升
DOI:
10.1016/j.topol.2016.10.005
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Žiga Virk
中科院分区:
文献类型:
--
作者:
K. Austin;Žiga Virk
Let X and Y be proper metric spaces. We show that a coarsely n-to-1 map f: X→ Y induces an n-to-1 map of Higson coronas. This viewpoint turns out to be successful in showing that the classical dimension raising theorems hold in large scale; that is, if f: X→ Y is a coarsely n-to-1 map between proper metric spaces X and Y then asdim (Y)≤ asdim (X)+ n− 1. Furthermore we introduce coarsely open coarsely n-to-1 maps, which include the natural quotient maps via a finite group action, and prove that they preserve the asymptotic dimension.