Guohua Wu

activity

20112020

most citedExistence of well-filterifications of

T_{0}

topological spaces

3 citations · 9 across the 4 of their papers we have counts for

collaborators

Showing 2020Show all

2 papers · 1 filter

math.GN2020★ 3 cited

Nonexistence of k-bounded sobrification

Jing Lu, Kaiyun Wang, Guohua Wu +1

In this paper, we will focus on k-bounded sober spaces and show the existence of a T_0 space X not admitting any k-bounded sobrification. This strengthens a result of Zhao, Lu and…

math.LO2020

members of thin $Π_{1}^{0}$ classes and generic degrees

Frank Stephan, Guohua Wu, Bowen Yuan

A $Π_{1}^{0}$ class $P$ is thin if every $Π_{1}^{0}$ subclass $Q$ of $P$ is the intersection of $P$ with some clopen set. In 1993, Cenzer, Downey, Jockusch and Shore initiated the…

Nonexistence of k-bounded sobrification

members of thin Π10​ classes and generic degrees

members of thin $Π_{1}^{0}$ classes and generic degrees