Acronym ...
Name hyperbolic order 3 icosahedral tesselation
 
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Circumradius sqrt[(1-3 sqrt(5))/22] = 0.509376 i
Vertex figure
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Dual (selfdual)
Confer
uniform relatives:
spd{3,5,3}   pd{3,5,3}  
general polytopal classes:
regular   noble polytopes  
External
links
wikipedia

Incidence matrix according to Dynkin symbol

x3o5o3o   (N → ∞)

. . . . |  N   20 |  30 | 12
--------+----+-----+-----+---
x . . . |  2 | 10N |   3 |  3
--------+----+-----+-----+---
x3o . . |  3 |   3 | 10N |  2
--------+----+-----+-----+---
x3o5o .  12 |  30 |  20 |  N

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