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Statistic identifier: St000303

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Collection: Graphs

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Description: The determinant of the product of the incidence matrix and its transpose of a graph divided by $4$.

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References: 

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Code:
def statistic(G):
    inc_mat = G.incidence_matrix()
    return ZZ((inc_mat*inc_mat.transpose()).determinant()/4)

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Statistic values:

([],1)                                                                                          => 0
([],2)                                                                                          => 0
([(0,1)],2)                                                                                     => 0
([],3)                                                                                          => 0
([(1,2)],3)                                                                                     => 0
([(0,2),(1,2)],3)                                                                               => 0
([(0,1),(0,2),(1,2)],3)                                                                         => 1
([],4)                                                                                          => 0
([(2,3)],4)                                                                                     => 0
([(1,3),(2,3)],4)                                                                               => 0
([(0,3),(1,3),(2,3)],4)                                                                         => 0
([(0,3),(1,2)],4)                                                                               => 0
([(0,3),(1,2),(2,3)],4)                                                                         => 0
([(1,2),(1,3),(2,3)],4)                                                                         => 0
([(0,3),(1,2),(1,3),(2,3)],4)                                                                   => 1
([(0,2),(0,3),(1,2),(1,3)],4)                                                                   => 0
([(0,2),(0,3),(1,2),(1,3),(2,3)],4)                                                             => 4
([(0,1),(0,2),(0,3),(1,2),(1,3),(2,3)],4)                                                       => 12
([],5)                                                                                          => 0
([(3,4)],5)                                                                                     => 0
([(2,4),(3,4)],5)                                                                               => 0
([(1,4),(2,4),(3,4)],5)                                                                         => 0
([(0,4),(1,4),(2,4),(3,4)],5)                                                                   => 0
([(1,4),(2,3)],5)                                                                               => 0
([(1,4),(2,3),(3,4)],5)                                                                         => 0
([(0,1),(2,4),(3,4)],5)                                                                         => 0
([(2,3),(2,4),(3,4)],5)                                                                         => 0
([(0,4),(1,4),(2,3),(3,4)],5)                                                                   => 0
([(1,4),(2,3),(2,4),(3,4)],5)                                                                   => 0
([(0,4),(1,4),(2,3),(2,4),(3,4)],5)                                                             => 1
([(1,3),(1,4),(2,3),(2,4)],5)                                                                   => 0
([(0,4),(1,2),(1,3),(2,4),(3,4)],5)                                                             => 0
([(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                                             => 0
([(0,4),(1,3),(2,3),(2,4),(3,4)],5)                                                             => 1
([(0,4),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                                       => 4
([(0,3),(0,4),(1,3),(1,4),(2,3),(2,4)],5)                                                       => 0
([(0,3),(0,4),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                                 => 12
([(0,4),(1,3),(2,3),(2,4)],5)                                                                   => 0
([(0,1),(2,3),(2,4),(3,4)],5)                                                                   => 0
([(0,3),(1,2),(1,4),(2,4),(3,4)],5)                                                             => 1
([(0,3),(0,4),(1,2),(1,4),(2,4),(3,4)],5)                                                       => 6
([(0,3),(0,4),(1,2),(1,4),(2,3)],5)                                                             => 1
([(0,1),(0,4),(1,3),(2,3),(2,4),(3,4)],5)                                                       => 4
([(0,3),(0,4),(1,2),(1,4),(2,3),(2,4),(3,4)],5)                                                 => 15
([(0,4),(1,2),(1,3),(2,3),(2,4),(3,4)],5)                                                       => 4
([(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                                       => 0
([(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                                 => 12
([(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                           => 36
([(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4)],5)                                                 => 12
([(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,4),(3,4)],5)                                           => 36
([(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                                     => 81
([(0,1),(0,2),(0,3),(0,4),(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)],5)                               => 162
([],6)                                                                                          => 0
([(4,5)],6)                                                                                     => 0
([(3,5),(4,5)],6)                                                                               => 0
([(2,5),(3,5),(4,5)],6)                                                                         => 0
([(1,5),(2,5),(3,5),(4,5)],6)                                                                   => 0
([(0,5),(1,5),(2,5),(3,5),(4,5)],6)                                                             => 0
([(2,5),(3,4)],6)                                                                               => 0
([(2,5),(3,4),(4,5)],6)                                                                         => 0
([(1,2),(3,5),(4,5)],6)                                                                         => 0
([(3,4),(3,5),(4,5)],6)                                                                         => 0
([(1,5),(2,5),(3,4),(4,5)],6)                                                                   => 0
([(0,1),(2,5),(3,5),(4,5)],6)                                                                   => 0
([(2,5),(3,4),(3,5),(4,5)],6)                                                                   => 0
([(0,5),(1,5),(2,5),(3,4),(4,5)],6)                                                             => 0
([(1,5),(2,5),(3,4),(3,5),(4,5)],6)                                                             => 0
([(0,5),(1,5),(2,5),(3,4),(3,5),(4,5)],6)                                                       => 1
([(2,4),(2,5),(3,4),(3,5)],6)                                                                   => 0
([(0,5),(1,5),(2,4),(3,4)],6)                                                                   => 0
([(1,5),(2,3),(2,4),(3,5),(4,5)],6)                                                             => 0
([(0,5),(1,5),(2,3),(3,4),(4,5)],6)                                                             => 0
([(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                             => 0
([(1,5),(2,4),(3,4),(3,5),(4,5)],6)                                                             => 0
([(0,5),(1,5),(2,4),(3,4),(4,5)],6)                                                             => 0
([(0,5),(1,5),(2,3),(2,4),(3,5),(4,5)],6)                                                       => 0
([(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                       => 0
([(0,5),(1,5),(2,4),(3,4),(3,5),(4,5)],6)                                                       => 1
([(0,5),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 4
([(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                                                       => 0
([(0,5),(1,4),(2,4),(2,5),(3,4),(3,5)],6)                                                       => 0
([(0,5),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                                                 => 0
([(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 0
([(0,5),(1,4),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 4
([(0,5),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 12
([(0,4),(0,5),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                                           => 0
([(0,4),(0,5),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 32
([(0,5),(1,4),(2,3)],6)                                                                         => 0
([(1,5),(2,4),(3,4),(3,5)],6)                                                                   => 0
([(0,1),(2,5),(3,4),(4,5)],6)                                                                   => 0
([(1,2),(3,4),(3,5),(4,5)],6)                                                                   => 0
([(0,5),(1,4),(2,3),(3,5),(4,5)],6)                                                             => 0
([(1,4),(2,3),(2,5),(3,5),(4,5)],6)                                                             => 0
([(0,1),(2,5),(3,4),(3,5),(4,5)],6)                                                             => 0
([(0,4),(1,5),(2,3),(2,5),(3,5),(4,5)],6)                                                       => 1
([(1,4),(1,5),(2,3),(2,5),(3,5),(4,5)],6)                                                       => 0
([(0,5),(1,4),(1,5),(2,3),(2,5),(3,5),(4,5)],6)                                                 => 6
([(1,4),(1,5),(2,3),(2,5),(3,4)],6)                                                             => 0
([(0,5),(1,4),(2,3),(2,4),(3,5),(4,5)],6)                                                       => 0
([(1,2),(1,5),(2,4),(3,4),(3,5),(4,5)],6)                                                       => 0
([(0,5),(1,2),(1,4),(2,3),(3,5),(4,5)],6)                                                       => 1
([(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                                                       => 0
([(0,5),(1,4),(2,3),(3,4),(3,5),(4,5)],6)                                                       => 1
([(0,5),(1,2),(1,5),(2,4),(3,4),(3,5),(4,5)],6)                                                 => 4
([(0,5),(1,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 4
([(1,4),(1,5),(2,3),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 0
([(0,5),(1,4),(1,5),(2,3),(2,5),(3,4),(3,5),(4,5)],6)                                           => 15
([(0,5),(1,4),(2,3),(2,4),(3,5)],6)                                                             => 0
([(0,1),(2,4),(2,5),(3,4),(3,5)],6)                                                             => 0
([(0,5),(1,5),(2,3),(2,4),(3,4)],6)                                                             => 0
([(0,4),(1,2),(1,3),(2,5),(3,5),(4,5)],6)                                                       => 0
([(0,4),(1,2),(1,5),(2,5),(3,4),(3,5)],6)                                                       => 1
([(0,4),(1,2),(2,5),(3,4),(3,5),(4,5)],6)                                                       => 1
([(0,1),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                       => 0
([(0,4),(1,4),(2,3),(2,5),(3,5),(4,5)],6)                                                       => 1
([(0,3),(0,4),(1,2),(1,5),(2,5),(3,5),(4,5)],6)                                                 => 4
([(0,3),(1,4),(1,5),(2,4),(2,5),(3,5),(4,5)],6)                                                 => 4
([(0,4),(1,2),(1,5),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 6
([(0,1),(0,5),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 20
([(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                       => 0
([(0,5),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                                                 => 4
([(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 0
([(0,5),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 12
([(0,1),(0,5),(1,4),(2,4),(2,5),(3,4),(3,5)],6)                                                 => 4
([(0,3),(0,5),(1,3),(1,5),(2,4),(2,5),(3,4),(4,5)],6)                                           => 12
([(0,3),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 12
([(0,5),(1,4),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                                           => 15
([(0,1),(0,5),(1,4),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 16
([(0,4),(0,5),(1,4),(1,5),(2,3),(2,5),(3,4),(3,5),(4,5)],6)                                     => 44
([(0,5),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                                           => 12
([(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 0
([(0,5),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 12
([(0,5),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 36
([(0,4),(0,5),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                                     => 32
([(0,4),(0,5),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 96
([(0,5),(1,3),(1,4),(2,3),(2,4),(3,5),(4,5)],6)                                                 => 0
([(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                                                 => 0
([(0,5),(1,3),(1,4),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                                           => 12
([(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                                           => 0
([(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                                     => 36
([(0,4),(0,5),(1,2),(1,3),(2,5),(3,4)],6)                                                       => 0
([(0,3),(0,5),(1,2),(1,5),(2,4),(3,4),(4,5)],6)                                                 => 0
([(0,5),(1,2),(1,4),(2,3),(3,4),(3,5),(4,5)],6)                                                 => 4
([(0,1),(0,2),(1,5),(2,4),(3,4),(3,5),(4,5)],6)                                                 => 6
([(0,5),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                                                 => 4
([(0,5),(1,3),(1,4),(2,4),(2,5),(3,4),(3,5)],6)                                                 => 4
([(0,1),(0,5),(1,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 15
([(0,4),(1,3),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                                           => 15
([(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(3,5),(4,5)],6)                                           => 20
([(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                                     => 50
([(0,4),(0,5),(1,2),(1,3),(2,4),(2,5),(3,4),(3,5)],6)                                           => 0
([(0,5),(1,2),(1,3),(1,4),(2,3),(2,4),(3,5),(4,5)],6)                                           => 12
([(0,4),(0,5),(1,2),(1,3),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                                     => 36
([(0,4),(0,5),(1,2),(1,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 36
([(0,4),(0,5),(1,2),(1,3),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 105
([(0,5),(1,2),(1,3),(1,4),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 36
([(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 0
([(0,5),(1,3),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 36
([(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 81
([(0,4),(0,5),(1,2),(1,4),(2,3),(2,5),(3,4),(3,5),(4,5)],6)                                     => 44
([(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                                     => 50
([(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 105
([(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 216
([(0,3),(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5)],6)                                     => 0
([(0,1),(0,2),(0,3),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 81
([(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                               => 96
([(0,3),(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                         => 216
([(0,3),(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                   => 432
([(0,4),(0,5),(1,2),(1,3),(2,3),(4,5)],6)                                                       => 4
([(0,2),(1,4),(1,5),(2,3),(3,4),(3,5),(4,5)],6)                                                 => 4
([(0,1),(0,5),(1,5),(2,3),(2,4),(3,4),(4,5)],6)                                                 => 10
([(0,1),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                                 => 0
([(0,1),(0,5),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                                           => 24
([(0,1),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                           => 12
([(0,1),(0,5),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 56
([(0,4),(0,5),(1,2),(1,3),(2,3),(2,5),(3,4),(4,5)],6)                                           => 24
([(0,4),(0,5),(1,2),(1,3),(1,4),(2,3),(2,5),(3,5),(4,5)],6)                                     => 56
([(0,3),(1,2),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 36
([(0,3),(0,5),(1,2),(1,4),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 54
([(0,1),(0,5),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                                     => 44
([(0,3),(0,5),(1,2),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 120
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                               => 128
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 256
([(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(2,5),(3,4)],6)                                           => 15
([(0,1),(0,5),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                                           => 20
([(0,3),(0,4),(1,2),(1,4),(1,5),(2,3),(2,5),(3,5),(4,5)],6)                                     => 50
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,3),(2,5),(3,5),(4,5)],6)                               => 125
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,3),(2,5),(3,4)],6)                                     => 54
([(0,1),(0,3),(0,5),(1,2),(1,4),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 120
([(0,4),(0,5),(1,2),(1,3),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                               => 120
([(0,1),(0,4),(0,5),(1,3),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 250
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                   => 480
([(0,2),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(3,4),(3,5),(4,5)],6)                               => 105
([(0,4),(0,5),(1,2),(1,3),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 108
([(0,4),(0,5),(1,2),(1,3),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 234
([(0,5),(1,2),(1,3),(1,4),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 81
([(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                               => 0
([(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 162
([(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                   => 432
([(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)             => 864
([(0,3),(0,4),(0,5),(1,2),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                         => 256
([(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5)],6)                         => 216
([(0,1),(0,4),(0,5),(1,2),(1,3),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)                         => 234
([(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,5),(4,5)],6)                   => 480
([(0,2),(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5)],6)                   => 512
([(0,2),(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)],6)             => 896
([(0,2),(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6)       => 1536
([(0,1),(0,2),(0,3),(0,4),(0,5),(1,2),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,4),(3,5),(4,5)],6) => 2560

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Created: Nov 26, 2015 at 12:13 by Christian Stump

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Last Updated: Nov 26, 2015 at 12:13 by Christian Stump