Acronym sersa
Name small rhombated hepteract,
cantellated hepteract
Circumradius sqrt[17+10 sqrt(2)]/2 = 2.790257
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Incidence matrix according to Dynkin symbol

o3o3o3o3x3o4x

o3o3o3o3o3o4o | 2688 |    10    2 |    20    5   10   1 |    20   10   20   5 |   10   10   20  10 |   2   5   10 10 |   1   2  5
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
. . . . x . . |    2 | 13440    * |     4    1    1   0 |     6    4    4   1 |    4    6    6   4 |   1   4    4  6 |   1   1  4
. . . . . . x |    2 |     * 2688 |     0    0    5   1 |     0    0   10   5 |    0    0   10  10 |   0   0    5 10 |   0   1  5
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
. . . o3x . . |    3 |     3    0 | 17920    *    *   * |     3    1    1   0 |    3    3    3   1 |   1   3    3  3 |   1   1  3
. . . . x3o . |    3 |     3    0 |     * 4480    *   * |     0    4    0   1 |    0    6    0   4 |   0   4    0  6 |   1   0  4
. . . . x . x |    4 |     2    2 |     *    * 6720   * |     0    0    4   1 |    0    0    6   4 |   0   0    4  6 |   0   1  4
. . . . . o4x |    4 |     0    4 |     *    *    * 672 |     0    0    0   5 |    0    0    0  10 |   0   0    0 10 |   0   0  5
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
. . o3o3x . .     4 |     6    0 |     4    0    0   0 | 13440    *    *   * |    2    1    1   0 |   1   2    2  1 |   1   1  2
. . . o3x3o .     6 |    12    0 |     4    4    0   0 |     * 4480    *   * |    0    3    0   1 |   0   3    0  3 |   1   0  3
. . . o3x . x     6 |     6    3 |     2    0    3   0 |     *    * 8960   * |    0    0    3   1 |   0   0    3  3 |   0   1  3
. . . . x3o4x    24 |    24   24 |     0    8   12   6 |     *    *    * 560 |    0    0    0   4 |   0   0    0  6 |   0   0  4
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
. o3o3o3x . .     5 |    10    0 |    10    0    0   0 |     5    0    0   0 | 5376    *    *   * |   1   1    1  0 |   1   1  1
. . o3o3x3o .    10 |    30    0 |    20   10    0   0 |     5    5    0   0 |    * 2688    *   * |   0   2    0  1 |   1   0  2
. . o3o3x . x     8 |    12    4 |     8    0    6   0 |     2    0    4   0 |    *    * 6720   * |   0   0    2  1 |   0   1  2
. . . o3x3o4x    96 |   192   96 |    64   64   96  24 |     0   16   32   8 |    *    *    * 280 |   0   0    0  3 |   0   0  3
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
o3o3o3o3x . .     6 |    15    0 |    20    0    0   0 |    15    0    0   0 |    6    0    0   0 | 896   *    *  * |   1   1  0
. o3o3o3x3o .    15 |    60    0 |    60   20    0   0 |    30   15    0   0 |    6    6    0   0 |   * 896    *  * |   1   0  1
. o3o3o3x . x    10 |    20    5 |    20    0   10   0 |    10    0   10   0 |    2    0    5   0 |   *   * 2688  * |   0   1  1
. . o3o3x3o4x   320 |   960  320 |   640  320  480  80 |   160  160  320  40 |    0   32   80  10 |   *   *    * 84 |   0   0  2
--------------+------+------------+---------------------+---------------------+--------------------+-----------------+-----------
o3o3o3o3x3o .    21 |   105    0 |   140   35    0   0 |   105   35    0   0 |   42   21    0   0 |   7   7    0  0 | 128   *  *
o3o3o3o3x . x    12 |    30    6 |    40    0   15   0 |    30    0   20   0 |   12    0   15   0 |   2   0    6  0 |   * 448  *
. o3o3o3x3o4x   960 |  3840  960 |  3840 1280 1920 240 |  1920  960 1920 160 |  384  384  960  60 |   0  64  192 12 |   *   * 14

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