1 citations · 1 across the 3 of their papers we have counts for
3 papers
math.MG2014
Tits rigidity of CAT(0) group boundaries
Khek Lun Harold Chao, Eric Swenson
We define Tits rigidity for visual boundaries of CAT(0) groups, and prove that the join of two Cantor sets and its suspension are Tits rigid.
math.MG2013
The rigidity of some finite group actions on CAT() spaces
Khek Lun Harold Chao
In this paper, we first prove the optimal lower bound for Alexandrov angle rigidity of torsion elliptic isometries on any complete CAT() space, which, when attained, leads to an…
math.MG2012★ 1 cited
CAT(0) spaces with boundary the join of two Cantor sets
Khek Lun Harold Chao
We will show that if a proper complete CAT(0) space X has a visual boundary homeomorphic to the join of two Cantor sets, and X admits a geometric group action by a group containing…