hyperbolic geometry (Q209306)
non-Euclidean geometry
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Current Data About hyperbolic geometry
(P31) (Q1936384)

(P61) (Q16924)

(Q129199)

(P138) (Q129199)
(P5168) "Lobatschewskische Geometrie" (language: de)
"Lobachevskian geometry" (language: en)
"罗氏几何" (language: zh-hans)

(Q16924)
(P5168) "Bolyai-Lobachevskian geometry" (language: en)

(P279) (Q233858)
(P248)
(P227) 4161041-6
(P407)
(P813) Tuesday, May 16, 2023

(P361) (Q233858)

(P373) Hyperbolic geometry

(P910) (Q7413888)

(P1343) (Q20078554)
(P805)

(Q20078554)
(P805)

(P2534) 2\pi R \sinh \frac{r}{R}
(P143)

(P6104) (Q8487137)