Mathematics – Combinatorics
Scientific paper
2009-05-31
Mathematics
Combinatorics
Scientific paper
De Bruijn and Erd\H{o}s proved that every noncollinear set of n points in the
plane determines at least n distinct lines. Chen and Chv\'atal suggested a
possible generalization of this theorem in the framework of metric spaces. We
provide partial results in this direction.
Chiniforooshan Ehsan
Chvatal Vasek
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