Hyperbolic is the only Hilbert geometry having circumcenter or orthocenter generally
2015 ◽
Vol 57
(1)
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pp. 243-258
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1990 ◽
Vol 320
(1)
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pp. 193
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2011 ◽
Vol 03
(02)
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pp. 213-241
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2004 ◽
Vol 105
(1)
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pp. 29-42
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2012 ◽
Vol 34
(2)
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pp. 501-533
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