Acronym sirhesa
Name small rhombated hemihepteract,
cantellated demihepteract
Circumradius sqrt(39/8) = 2.207940
Coordinates (3/sqrt(8), 3/sqrt(8), 3/sqrt(8), 3/sqrt(8), 1/sqrt(8), 1/sqrt(8), 1/sqrt(8))   & all even permutations, all even changes of sign
External
links
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Incidence matrix according to Dynkin symbol

x3o3o *b3x3o3o3o

. . .    . . . . | 2240 |    3    12 |    3   12   12    18 |   1   12   18    4   18   12 |   4   18   12    6   12    3 |  6  12   3   4   3 |  4  3  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x . .    . . . . |    2 | 3360     * |    2    4    0     0 |   1    8    6    0    0    0 |   4   12    4    0    0    0 |  6   8   1   0   0 |  4  2  0
. . .    x . . . |    2 |    * 13440 |    0    1    2     3 |   0    2    3    1    6    3 |   1    6    3    3    6    1 |  3   6   1   3   2 |  3  2  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x3o .    . . . . |    3 |    3     0 | 2240    *    *     * |   1    4    0    0    0    0 |   4    6    0    0    0    0 |  6   4   0   0   0 |  4  1  0
x . .    x . . . |    4 |    2     2 |    * 6720    *     * |   0    2    3    0    0    0 |   1    6    3    0    0    0 |  3   6   1   0   0 |  3  2  0
. o . *b3x . . . |    3 |    0     3 |    *    * 8960     * |   0    1    0    1    3    0 |   1    3    0    3    3    0 |  3   3   0   3   1 |  3  1  1
. . .    x3o . . |    3 |    0     3 |    *    *    * 13440 |   0    0    1    0    2    2 |   0    2    2    1    4    1 |  1   4   1   2   2 |  2  2  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x3o3o    . . . .     4 |    6     0 |    4    0    0     0 | 560    *    *    *    *    * |   4    0    0    0    0    0 |  6   0   0   0   0 |  4  0  0
x3o . *b3x . . .    12 |   12    12 |    4    6    4     0 |   * 2240    *    *    *    * |   1    3    0    0    0    0 |  3   3   0   0   0 |  3  1  0
x . .    x3o . .     6 |    3     6 |    0    3    0     2 |   *    * 6720    *    *    * |   0    2    2    0    0    0 |  1   4   1   0   0 |  2  2  0
. o3o *b3x . . .     4 |    0     6 |    0    0    4     0 |   *    *    * 2240    *    * |   1    0    0    3    0    0 |  3   0   0   3   0 |  3  0  1
. o . *b3x3o . .     6 |    0    12 |    0    0    4     4 |   *    *    *    * 6720    * |   0    1    0    1    2    0 |  1   2   0   2   1 |  2  1  1
. . .    x3o3o .     4 |    0     6 |    0    0    0     4 |   *    *    *    *    * 6720 |   0    0    1    0    2    1 |  0   2   1   1   2 |  1  2  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x3o3o *b3x . . .    32 |   48    48 |   32   24   32     0 |   8    8    0    8    0    0 | 280    *    *    *    *    * |  3   0   0   0   0 |  3  0  0
x3o . *b3x3o . .    30 |   30    60 |   10   30   20    20 |   0    5   10    0    5    0 |   * 1344    *    *    *    * |  1   2   0   0   0 |  2  1  0
x . .    x3o3o .     8 |    4    12 |    0    6    0     8 |   0    0    4    0    0    2 |   *    * 3360    *    *    * |  0   2   1   0   0 |  1  2  0
. o3o *b3x3o . .    10 |    0    30 |    0    0   20    10 |   0    0    0    5    5    0 |   *    *    * 1344    *    * |  1   0   0   2   0 |  2  0  1
. o . *b3x3o3o .    10 |    0    30 |    0    0   10    20 |   0    0    0    0    5    5 |   *    *    *    * 2688    * |  0   1   0   1   1 |  1  1  1
. . .    x3o3o3o     5 |    0    10 |    0    0    0    10 |   0    0    0    0    0    5 |   *    *    *    *    * 1344 |  0   0   1   0   2 |  0  2  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x3o3o *b3x3o . .   160 |  240   480 |  160  240  320   160 |  40   80   80   80   80    0 |  10   16    0   16    0    0 | 84   *   *   *   * |  2  0  0
x3o . *b3x3o3o .    60 |   60   180 |   20   90   60   120 |   0   15   60    0   30   30 |   0    6   15    0    6    0 |  * 448   *   *   * |  1  1  0
x . .    x3o3o3o    10 |    5    20 |    0   10    0    20 |   0    0   10    0    0   10 |   0    0    5    0    0    2 |  *   * 672   *   * |  0  2  0
. o3o *b3x3o3o .    20 |    0    90 |    0    0   60    60 |   0    0    0   15   30   15 |   0    0    0    6    6    0 |  *   *   * 448   * |  1  0  1
. o . *b3x3o3o3o    15 |    0    60 |    0    0   20    60 |   0    0    0    0   15   30 |   0    0    0    0    6    6 |  *   *   *   * 448 |  0  1  1
-----------------+------+------------+----------------------+------------------------------+------------------------------+--------------------+---------
x3o3o *b3x3o3o .   640 |  960  2880 |  640 1440 1920  1920 | 160  480  960  480  960  480 |  60  192  240  192  192    0 | 12  32   0  32   0 | 14  *  *
x3o . *b3x3o3o3o   105 |  105   420 |   35  210  140   420 |   0   35  210    0  105  210 |   0   21  105    0   42   42 |  0   7  21   0   7 |  * 64  *
. o3o *b3x3o3o3o    35 |    0   210 |    0    0  140   210 |   0    0    0   35  105  105 |   0    0    0   21   42   21 |  0   0   0   7   7 |  *  * 64

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