Polyhedral compactifications, I [article]

Corina Ciobotaru, Linus Kramer, Petra Schwer
2020 arXiv   pre-print
In this work we describe horofunction compactifications of metric spaces and finite dimensional real vector spaces through asymmetric metrics and asymmetric polyhedral norms by means of nonstandard methods, that is, ultrapowers of the spaces at hand. The compactifications of the vector spaces carry the structure of stratified spaces with the strata indexed by dual faces of the polyhedral unit ball. Explicit neighborhood bases and descriptions of the horofunctions are provided.
arXiv:2002.12422v3 fatcat:jmxtxjg3ebeajklgofi4s4kjpy