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math.CV2021
Gromov hyperbolic John is quasihyperbolic John II
Qingshan Zhou, Saminathan Ponnusamy
In this paper, we introduce a concept of quasihyperbolic John spaces (with center) and provide a criteria to determine spaces to be quasihyperbolic John. As an application, we prov…
math.CV2021
Gromov hyperbolic John is quasihyperbolic John I
Qingshan Zhou, Saminathan Ponnusamy
In this paper, we introduce a concept of quasihyperbolic John spaces and provide a necessary and sufficient condition for a space to be quasihyperbolic John. Using this criteria, w…
math.CV2021
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…