2 citations · 4 across the 13 of their papers we have counts for
15 papers
Boundary rigidity of Gromov hyperbolic spaces
Hao Liang, Qingshan Zhou
We introduce the concept of boundary rigidity for Gromov hyperbolic spaces. We show that a proper geodesic Gromov hyperbolic space with a pole is boundary rigid if and only if its…
Gromov hyperbolicity in the free quasiworld. I
Qingshan Zhou, Saminathan Ponnusamy
With the aid of a Gromov hyperbolic characterization of uniform domains, we first give an affirmative answer to an open question arisen by Väisälä under weaker assumption. Next, we…
A note on -bilipschitz mappings in quasiconvex metric spaces
Tiantian Guan, Saminathan Ponnusamy, Qingshan Zhou
This paper focuses on properties of \partial-biLipschitz mappings which were recently introduced by Bulter. We establish several characterizations for the class of \partial-biLipsc…
Some remarks on the Gehring-Hayman theorem
Sari Rogovin, Hyogo Shibahara, Qingshan Zhou
In this paper we provide new characterizations of the Gehring-Hayman theorem from the point of view of Gromov boundary and uniformity. We also determine the critical exponents for…
Pommerenke's theorem on Gromov hyperbolic domains
Qingshan Zhou, Antti Rasila, Tiantian Guan
We establish a version of a classical theorem of Pommerenke, which is a diameter version of the Gehring-Hayman inequality on Gromov hyperbolic domains of . Two applic…
A note on Väisälä's problem concerning free quasiconformal mappings
Qingshan Zhou, Yaxiang Li, Antti Rasila
In this paper, we provide partial solutions to a problem raised by Väisälä on local properties of free quasiconformal mappings. In particular, we show that a locally free quasiconf…