| Acronym | ... |
| TOCID symbol | OC* |
| Name | 3oct+6{4} (?) |
| Circumradius | 1/sqrt(2) = 0.707107 |
| Vertex figure | [(3,3,3/2,3,4)] |
| Coordinates | (1/sqrt(2), 0, 0) & all permutations, all changes of sign |
| General of army | oct |
| Colonel of regiment | oct |
| Confer | oct+6{4} 2oct+6{4} 2oct+12{4} |
Looks like a compound of 3 coincident octahedra (oct) plus 3 diametral pairs of squares, and indeed edges coincides by 5, squares by 2, and each octahedral triangle coincides with 2 further sefa triangles, while vertices coincide by 4.
Incidence matrix according to Dynkin symbol
s3s4/3s
demi( . . . ) | 24 | 1 2 2 | 1 1 3
----------------+----+----------+-------
s 2 s ♦ 2 | 12 * * | 0 0 2
sefa( s3s . ) | 2 | * 24 * | 1 0 1
sefa( . s4/3s ) | 2 | * * 24 | 0 1 1
----------------+----+----------+-------
s3s . ♦ 3 | 0 3 0 | 8 * *
. s4/3s ♦ 4 | 0 0 4 | * 6 *
sefa( s3s4/3s ) | 3 | 1 1 1 | * * 24
starting figure: x3x4/3x
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