Kay, D. C. The Ptolemaic inequality in Hilbert geometries. (English) Zbl 0147.22406 Pac. J. Math. 21, 293-301 (1967). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 12 Documents Keywords:metric geometry, convex geometry, integral geometry × Cite Format Result Cite Review PDF Full Text: DOI