Horofunction compactifications and local Gromov model domains

Fuente: arXiv
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Main Authors: Chandel, Vikramjeet Singh, Gorai, Sushil, Maitra, Anwoy, Sarkar, Amar Deep
Format: Preprint
Published: 2025
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author Chandel, Vikramjeet Singh
Gorai, Sushil
Maitra, Anwoy
Sarkar, Amar Deep
author_facet Chandel, Vikramjeet Singh
Gorai, Sushil
Maitra, Anwoy
Sarkar, Amar Deep
contents We explore the horofunction compactification of complete hyperbolic domains in complex Euclidean space equipped with the Kobayashi distance. We provide a sufficient condition under which, given a domain $Ω$ as above, the identity map from $Ω$ to itself extends to an embedding of $\overlineΩ$ into the horofunction compactification of $(Ω,k_Ω)$, with $k_Ω$ denoting the Kobayashi distance on $Ω$. Notably, this condition admits unbounded domains that are not Gromov hyperbolic relative to the Kobayashi distance. We also provide a large class of planar hyperbolic domains satisfying the above condition.
format Preprint
id arxiv_https___arxiv_org_abs_2512_06321
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Horofunction compactifications and local Gromov model domains
Chandel, Vikramjeet Singh
Gorai, Sushil
Maitra, Anwoy
Sarkar, Amar Deep
Complex Variables
32F45, 30C20, 30D40, 53C23 (Primary) 32Q45, 53C22 (Secondary)
We explore the horofunction compactification of complete hyperbolic domains in complex Euclidean space equipped with the Kobayashi distance. We provide a sufficient condition under which, given a domain $Ω$ as above, the identity map from $Ω$ to itself extends to an embedding of $\overlineΩ$ into the horofunction compactification of $(Ω,k_Ω)$, with $k_Ω$ denoting the Kobayashi distance on $Ω$. Notably, this condition admits unbounded domains that are not Gromov hyperbolic relative to the Kobayashi distance. We also provide a large class of planar hyperbolic domains satisfying the above condition.
title Horofunction compactifications and local Gromov model domains
topic Complex Variables
32F45, 30C20, 30D40, 53C23 (Primary) 32Q45, 53C22 (Secondary)
url https://arxiv.org/abs/2512.06321