Straight projective-metric spaces with centers
classification
🧮 math.MG
keywords
centersprojective-metricstraighteithergeometryhyperbolicminkowskianspace
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It is proved that a straight projective-metric space has an open set of centers, if and only if it is either the hyperbolic or a Minkowskian geometry. It is also shown that if a straight projective-metric space has some finitely many well-placed centers, then it is either the hyperbolic or a Minkowskian geometry.
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