Acronym siddiddip
Name snub-dodecadodecahedron prism
Colonel of regiment (is itself locally convex – no other uniform polyhedral members)
External
links
hedrondude   polytopewiki  

As abstract polytope siddiddip is isomorphic to isdiddip, thereby replacing prograde pentagrams by retrrograde ones, resp. replacing siddid by isdid.


Incidence matrix according to Dynkin symbol

x s5/2s5s

. demi( .   . . ) | 120 |  1  1   2   2 |  1  2  2  1  1   3 |  1  1  3 1
------------------+-----+---------------+--------------------+-----------
x demi( .   . . ) |   2 | 60  *   *   * |  1  2  2  0  0   0 |  1  1  3 0
.       s   2 s      2 |  * 60   *   * |  1  0  0  0  0   2 |  0  0  2 1
. sefa( s5/2s . ) |   2 |  *  * 120   * |  0  1  0  1  0   1 |  1  0  1 1
. sefa( .   s5s ) |   2 |  *  *   * 120 |  0  0  1  0  1   1 |  0  1  1 1
------------------+-----+---------------+--------------------+-----------
x       s   2 s   |   4 |  2  2   0   0 | 30  *  *  *  *   * |  0  0  2 0
x sefa( s5/2s . ) |   4 |  2  0   2   0 |  * 60  *  *  *   * |  1  0  1 0
x sefa( .   s5s ) |   4 |  2  0   0   2 |  *  * 60  *  *   * |  0  1  1 0
.       s5/2s .      5 |  0  0   5   0 |  *  *  * 24  *   * |  1  0  0 1
.       .   s5s      5 |  0  0   0   5 |  *  *  *  * 24   * |  0  1  0 1
. sefa( s5/2s5s ) |   3 |  0  1   1   1 |  *  *  *  *  * 120 |  0  0  1 1
------------------+-----+---------------+--------------------+-----------
x       s5/2s .     10 |  5  0  10   0 |  0  5  0  2  0   0 | 12  *  * *
x       .   s5s     10 |  5  0   0  10 |  0  0  5  0  2   0 |  * 12  * *
x sefa( s5/2s5s )    6 |  3  2   2   2 |  1  1  1  0  0   2 |  *  * 60 *
.       s5/2s5s     60 |  0 30  60  60 |  0  0  0 12 12  60 |  *  *  * 2

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