Matroid database

Matroid 3.12.5936

Label3.12.5936
Idr3_n12_0******0******0*************0******************0****************************0***********************************0**********************************************************************************************************0
Rank3
n12
123456789101112

Affine diagram (real realization).

Basic invariants

Bases212
Circuits431
Flats64
Cyclic flats10
Loops0
Connected components1
Automorphisms2
Beta invariant37
Girth3
Simpleyes
Connectedyes
Uniformnot computed
Looplessyes
Colooplessyes
Pavingyes
Laminarno
Nestedno
Self dualno
Identically self dualno
Series parallelno
Transversalno
Supersolvableno
Divisionally freeno
Orientableyes
Three linesno

Representability

Characteristic setcharacteristic 0 and all primes [0]
Realizableyes
Realizable char0yes
Regularno
Binaryno
Ternaryno
Quaternaryno
Graphicno

Realization space

Statuscomputed_realization_space
Dimension of realization space8
Expected dimension over ℤ9
Components of realization spacenot computed
Free realization spaceyes
Principal idealyes
Birational typenot computed
Birational type componentsnot computed
Good basisnot computed
Good basis v21,3,6

Geometry

Realization space: scheme simple core idnot computed
Smooth char 0not computed
Singular primesnot computed
Realization space: smooth over ℚyes
Realization space: smooth over ℤyes
how determined: smoothness method: audited_free_chart
Realization space: is regular schemenot computed
Realization space: singular fiber primesnot computed
Realization space: singular fiber characteristicsnone
how determined: singular fiber characteristics method: smooth_over_ZZ
Realization space: characteristic dimensions
show
[
 {
  "p": 0,
  "d": 8
 }
]
how determined: characteristic dimensions method: audited_free_chart
Realization space: characteristic dimension unexpectedno
Realization space: characteristic dimension variesno

Other

Char poly splitsfalse
Simplicial arrangementno
Realization space: n qbar componentsnot computed

Tutte polynomial

\(T = x_{0}^{3} + 9 x_{0}^{2} + 8 x_{0} x_{1} + 37 x_{0} + x_{1}^{9} + 3 x_{1}^{8} + 6 x_{1}^{7} + 10 x_{1}^{6} + 15 x_{1}^{5} + 21 x_{1}^{4} + 28 x_{1}^{3} + 36 x_{1}^{2} + 37 x_{1}\)

Realization space

Ring\(\mathbb{Z}[x_{1}, x_{2}, x_{3}, x_{4}, x_{5}, x_{6}, x_{7}, x_{8}]\)
Defining ideal\(\left(0\right)\)
Inequations\(x_{3} x_{8} - x_{4} x_{7} \neq 0\), \(x_{5} \neq 0\), \(x_{6} - x_{8} \neq 0\), \(x_{3} x_{5} x_{8} - x_{4} x_{5} x_{7} + x_{4} x_{5} - x_{4} x_{8} \neq 0\), \(x_{3} x_{5} x_{8} - x_{3} x_{5} - x_{4} x_{5} x_{7} + x_{4} x_{5} + x_{4} x_{7} - x_{4} x_{8} \neq 0\), \(x_{1} x_{3} x_{5} - x_{1} x_{4} x_{5} - x_{1} x_{4} x_{7} + x_{1} x_{4} x_{8} - x_{3} x_{5} x_{8} + x_{4} x_{5} x_{7} \neq 0\), \(x_{3} x_{5} - x_{4} x_{7} \neq 0\), \(x_{1} x_{3} x_{5} - x_{1} x_{4} x_{7} - x_{3} x_{4} x_{5} + x_{3} x_{4} x_{8} - x_{3} x_{5} x_{8} + x_{4} x_{5} x_{7} \neq 0\), \(x_{2} x_{3} x_{5} - x_{2} x_{4} x_{7} - x_{4} x_{5} + x_{4} x_{8} \neq 0\), \(x_{4} - x_{5} \neq 0\), \(x_{5} - x_{8} \neq 0\), \(x_{3} x_{8} - x_{4} x_{7} + x_{4} - x_{8} \neq 0\), \(x_{4} - x_{8} \neq 0\), \(x_{3} x_{8} - x_{3} - x_{4} x_{7} + x_{4} + x_{7} - x_{8} \neq 0\), \(x_{1} x_{3} - x_{1} x_{4} - x_{1} x_{7} + x_{1} x_{8} - x_{3} x_{8} + x_{4} x_{7} \neq 0\), \(x_{3} - x_{7} \neq 0\), \(x_{1} - x_{4} \neq 0\), \(x_{2} x_{3} - x_{2} x_{7} - x_{4} + x_{8} \neq 0\), \(x_{2} x_{7} - x_{8} \neq 0\), \(x_{2} x_{7} - x_{2} - x_{8} \neq 0\), \(x_{2} \neq 0\), \(x_{2} x_{7} - x_{2} - x_{8} + 1 \neq 0\), \(x_{1} x_{2} - x_{1} - x_{2} x_{7} + x_{8} \neq 0\), \(x_{1} - x_{2} x_{3} + x_{2} x_{7} - x_{8} \neq 0\), \(x_{1} x_{7} - x_{3} x_{8} \neq 0\), \(x_{1} x_{7} - x_{1} - x_{3} x_{8} + x_{8} \neq 0\), \(x_{1} - x_{8} \neq 0\), \(x_{1} x_{7} - x_{1} - x_{3} x_{8} + x_{3} - x_{7} + x_{8} \neq 0\), \(x_{1} - x_{3} \neq 0\), \(x_{7} \neq 0\), \(x_{7} - 1 \neq 0\), \(x_{1} - x_{7} \neq 0\), \(x_{1} \neq 0\), \(x_{7} - x_{8} \neq 0\), \(x_{1} x_{7} - x_{1} x_{8} - x_{1} + x_{8} \neq 0\), \(x_{1} - 1 \neq 0\), \(x_{8} - 1 \neq 0\), \(x_{8} \neq 0\), \(x_{5} - x_{6} \neq 0\), \(x_{3} x_{5} x_{8} - x_{3} x_{6} x_{8} - x_{4} x_{5} x_{7} + x_{4} x_{5} + x_{4} x_{6} x_{7} - x_{4} x_{8} - x_{5} x_{6} + x_{6} x_{8} \neq 0\), \(x_{4} - x_{6} \neq 0\), \(x_{3} x_{4} x_{5} x_{8} - x_{3} x_{4} x_{5} - x_{3} x_{4} x_{6} x_{8} + x_{3} x_{4} x_{8} + x_{3} x_{5} x_{6} - x_{3} x_{5} x_{8} - x_{4}^{2} x_{5} x_{7} + x_{4}^{2} x_{5} + x_{4}^{2} x_{6} x_{7} - x_{4}^{2} x_{8} - x_{4} x_{5} x_{6} + x_{4} x_{5} x_{7} - x_{4} x_{6} x_{7} + x_{4} x_{6} x_{8} \neq 0\), \(x_{1} x_{3} x_{4} x_{5} - x_{1} x_{3} x_{4} x_{8} - x_{1} x_{3} x_{5} x_{6} + x_{1} x_{3} x_{5} x_{8} - x_{1} x_{4}^{2} x_{5} + x_{1} x_{4}^{2} x_{8} + x_{1} x_{4} x_{5} x_{6} - x_{1} x_{4} x_{5} x_{7} + x_{1} x_{4} x_{6} x_{7} - x_{1} x_{4} x_{6} x_{8} - x_{3} x_{4} x_{5} x_{8} + x_{3} x_{4} x_{6} x_{8} + x_{4}^{2} x_{5} x_{7} - x_{4}^{2} x_{6} x_{7} \neq 0\), \(x_{3} x_{4} x_{5} - x_{3} x_{4} x_{8} - x_{3} x_{5} x_{6} + x_{3} x_{5} x_{8} - x_{4} x_{5} x_{7} + x_{4} x_{6} x_{7} \neq 0\), \(x_{2} x_{3} x_{4} x_{5} - x_{2} x_{3} x_{4} x_{8} - x_{2} x_{3} x_{5} x_{6} + x_{2} x_{3} x_{5} x_{8} - x_{2} x_{4} x_{5} x_{7} + x_{2} x_{4} x_{6} x_{7} - x_{4}^{2} x_{5} + x_{4}^{2} x_{8} + x_{4} x_{5} x_{6} - x_{4} x_{6} x_{8} \neq 0\), \(x_{2} x_{3} x_{5} x_{6} - x_{2} x_{3} x_{5} x_{8} + x_{2} x_{4} x_{5} x_{7} - x_{2} x_{4} x_{6} x_{7} - x_{4} x_{5} x_{6} + x_{4} x_{6} x_{8} \neq 0\), \(x_{2} x_{3} x_{5} x_{6} - x_{2} x_{3} x_{5} x_{8} + x_{2} x_{4} x_{5} x_{7} - x_{2} x_{4} x_{5} - x_{2} x_{4} x_{6} x_{7} + x_{2} x_{4} x_{8} - x_{4} x_{5} x_{6} + x_{4} x_{6} x_{8} \neq 0\), \(x_{2} x_{3} x_{5} x_{6} - x_{2} x_{3} x_{5} x_{8} + x_{2} x_{4} x_{5} x_{7} - x_{2} x_{4} x_{5} - x_{2} x_{4} x_{6} x_{7} + x_{2} x_{4} x_{8} - x_{4} x_{5} x_{6} + x_{4} x_{5} + x_{4} x_{6} x_{8} - x_{4} x_{8} \neq 0\), \(x_{1} x_{2} x_{4} x_{5} - x_{1} x_{2} x_{4} x_{8} - x_{1} x_{4} x_{5} + x_{1} x_{4} x_{8} - x_{2} x_{3} x_{5} x_{6} + x_{2} x_{3} x_{5} x_{8} - x_{2} x_{4} x_{5} x_{7} + x_{2} x_{4} x_{6} x_{7} + x_{4} x_{5} x_{6} - x_{4} x_{6} x_{8} \neq 0\), \(x_{1} x_{4} x_{5} - x_{1} x_{4} x_{8} - x_{2} x_{3} x_{4} x_{5} + x_{2} x_{3} x_{4} x_{8} + x_{2} x_{3} x_{5} x_{6} - x_{2} x_{3} x_{5} x_{8} + x_{2} x_{4} x_{5} x_{7} - x_{2} x_{4} x_{6} x_{7} - x_{4} x_{5} x_{6} + x_{4} x_{6} x_{8} \neq 0\), \(x_{1} x_{3} x_{5} x_{6} - x_{1} x_{3} x_{5} x_{8} + x_{1} x_{4} x_{5} x_{7} - x_{1} x_{4} x_{6} x_{7} - x_{3} x_{4} x_{5} x_{6} + x_{3} x_{4} x_{6} x_{8} \neq 0\), \(x_{1} x_{3} x_{5} x_{6} - x_{1} x_{3} x_{5} x_{8} + x_{1} x_{4} x_{5} x_{7} - x_{1} x_{4} x_{5} - x_{1} x_{4} x_{6} x_{7} + x_{1} x_{4} x_{8} - x_{3} x_{4} x_{5} x_{6} + x_{3} x_{4} x_{6} x_{8} + x_{4} x_{5} x_{6} - x_{4} x_{6} x_{8} \neq 0\), \(x_{1} - x_{6} \neq 0\), \(x_{1} x_{3} x_{5} x_{6} - x_{1} x_{3} x_{5} x_{8} + x_{1} x_{4} x_{5} x_{7} - x_{1} x_{4} x_{5} - x_{1} x_{4} x_{6} x_{7} + x_{1} x_{4} x_{8} - x_{3} x_{4} x_{5} x_{6} + x_{3} x_{4} x_{5} + x_{3} x_{4} x_{6} x_{8} - x_{3} x_{4} x_{8} - x_{3} x_{5} x_{6} + x_{3} x_{5} x_{8} + x_{4} x_{5} x_{6} - x_{4} x_{5} x_{7} + x_{4} x_{6} x_{7} - x_{4} x_{6} x_{8} \neq 0\), \(x_{3} x_{5} x_{6} - x_{3} x_{5} x_{8} + x_{4} x_{5} x_{7} - x_{4} x_{6} x_{7} \neq 0\), \(x_{3} x_{5} x_{6} - x_{3} x_{5} x_{8} + x_{4} x_{5} x_{7} - x_{4} x_{5} - x_{4} x_{6} x_{7} + x_{4} x_{8} \neq 0\), \(x_{1} x_{4} x_{5} - x_{1} x_{4} x_{8} - x_{3} x_{5} x_{6} + x_{3} x_{5} x_{8} - x_{4} x_{5} x_{7} + x_{4} x_{6} x_{7} \neq 0\), \(x_{3} x_{5} x_{6} - x_{3} x_{5} x_{8} - x_{4} x_{5} x_{6} + x_{4} x_{5} x_{7} - x_{4} x_{6} x_{7} + x_{4} x_{6} x_{8} \neq 0\), \(x_{1} x_{3} x_{5} x_{6} - x_{1} x_{3} x_{5} x_{8} - x_{1} x_{4} x_{5} x_{6} + x_{1} x_{4} x_{5} x_{7} - x_{1} x_{4} x_{5} - x_{1} x_{4} x_{6} x_{7} + x_{1} x_{4} x_{6} x_{8} + x_{1} x_{4} x_{8} + x_{4} x_{5} x_{6} - x_{4} x_{6} x_{8} \neq 0\), \(x_{6} - 1 \neq 0\), \(x_{6} \neq 0\), \(x_{3} - x_{4} \neq 0\), \(x_{3} \neq 0\), \(x_{2} x_{3} - x_{4} \neq 0\), \(x_{2} x_{3} x_{5} - x_{2} x_{4} - x_{4} x_{5} \neq 0\), \(x_{2} x_{3} x_{5} - x_{2} x_{4} - x_{4} x_{5} + x_{4} \neq 0\), \(x_{1} x_{2} x_{4} - x_{1} x_{4} - x_{2} x_{3} x_{5} + x_{4} x_{5} \neq 0\), \(x_{1} x_{4} - x_{2} x_{3} x_{4} + x_{2} x_{3} x_{5} - x_{4} x_{5} \neq 0\), \(x_{1} x_{3} x_{5} - x_{1} x_{4} - x_{3} x_{4} x_{5} + x_{4} x_{5} \neq 0\), \(x_{1} - x_{5} \neq 0\), \(x_{1} x_{3} x_{5} - x_{1} x_{4} - x_{3} x_{4} x_{5} + x_{3} x_{4} - x_{3} x_{5} + x_{4} x_{5} \neq 0\), \(x_{3} x_{5} - x_{4} \neq 0\), \(x_{1} x_{4} - x_{3} x_{5} \neq 0\), \(x_{1} x_{3} x_{5} - x_{1} x_{4} x_{5} - x_{1} x_{4} + x_{4} x_{5} \neq 0\), \(x_{5} - 1 \neq 0\), \(x_{2} x_{3} - x_{2} - x_{4} \neq 0\), \(x_{2} x_{3} - x_{2} - x_{4} + 1 \neq 0\), \(x_{1} x_{2} - x_{1} - x_{2} x_{3} + x_{4} \neq 0\), \(x_{3} - 1 \neq 0\), \(x_{1} x_{3} - x_{1} x_{4} - x_{1} + x_{4} \neq 0\), \(x_{4} - 1 \neq 0\), \(x_{4} \neq 0\), \(x_{1} - x_{2} x_{3} \neq 0\), \(x_{1} - x_{2} x_{3} + x_{2} \neq 0\), \(x_{1} - x_{2} x_{3} + x_{2} - 1 \neq 0\), \(x_{2} - 1 \neq 0\), \(x_{1} x_{2} - x_{1} - x_{2} \neq 0\)
Realization matrix\(\begin{pmatrix}1 & 1 & 0 & 1 & 1 & 0 & 1 & 0 & 1 & x_{4} & x_{4} x_{5} - x_{4} x_{8} & 1 \\ 0 & 1 & 1 & 1 & x_{1} & 0 & x_{3} & 1 & x_{3} & x_{3} x_{5} & x_{3} x_{5} x_{6} - x_{3} x_{5} x_{8} + x_{4} x_{5} x_{7} - x_{4} x_{6} x_{7} & x_{7} \\ 0 & 0 & 0 & 1 & x_{1} & 1 & x_{1} & x_{2} & x_{4} & x_{4} x_{5} & x_{4} x_{5} x_{6} - x_{4} x_{6} x_{8} & x_{8}\end{pmatrix}\)

Combinatorics

Computed on the fly from the id.

Bases (212){1,2,4} {1,3,4} {2,3,4} {1,2,5} {1,3,5} {2,3,5} {2,4,5} {3,4,5} {1,2,6} {1,3,6} {2,3,6} {1,4,6} {3,4,6} {1,5,6} {2,5,6} {3,5,6} {4,5,6} {1,2,7} {1,3,7} {2,3,7} {1,4,7} {2,4,7} {3,4,7} {1,5,7} {2,5,7} {4,5,7} {1,6,7} {2,6,7} {3,6,7} {4,6,7} {5,6,7} {1,2,8} {1,3,8} {2,3,8} {1,4,8} {2,4,8} {3,4,8} {1,5,8} {2,5,8} {3,5,8} {4,5,8} {1,6,8} {2,6,8} {4,6,8} {5,6,8} {1,7,8} {2,7,8} {3,7,8} {4,7,8} {5,7,8} {6,7,8} {1,2,9} {1,3,9} {2,3,9} {1,4,9} {2,4,9} {3,4,9} {1,5,9} {2,5,9} {3,5,9} {4,5,9} {1,6,9} {2,6,9} {3,6,9} {4,6,9} {5,6,9} {1,7,9} {2,7,9} {3,7,9} {4,7,9} {5,7,9} {1,8,9} {2,8,9} {3,8,9} {4,8,9} {5,8,9} {6,8,9} {7,8,9} {1,2,10} {1,3,10} {2,3,10} {1,4,10} {2,4,10} {3,4,10} {1,5,10} {2,5,10} {3,5,10} {4,5,10} {1,6,10} {2,6,10} {3,6,10} {4,6,10} {5,6,10} {1,7,10} {2,7,10} {3,7,10} {4,7,10} {5,7,10} {6,7,10} {1,8,10} {2,8,10} {3,8,10} {4,8,10} {5,8,10} {6,8,10} {7,8,10} {2,9,10} {3,9,10} {4,9,10} {5,9,10} {6,9,10} {7,9,10} {8,9,10} {1,2,11} {1,3,11} {2,3,11} {1,4,11} {2,4,11} {3,4,11} {1,5,11} {2,5,11} {3,5,11} {4,5,11} {1,6,11} {2,6,11} {3,6,11} {4,6,11} {5,6,11} {1,7,11} {2,7,11} {3,7,11} {4,7,11} {5,7,11} {6,7,11} {1,8,11} {2,8,11} {3,8,11} {4,8,11} {5,8,11} {6,8,11} {7,8,11} {1,9,11} {2,9,11} {3,9,11} {4,9,11} {5,9,11} {6,9,11} {7,9,11} {8,9,11} {1,10,11} {2,10,11} {3,10,11} {4,10,11} {5,10,11} {6,10,11} {7,10,11} {8,10,11} {9,10,11} {1,2,12} {1,3,12} {2,3,12} {1,4,12} {2,4,12} {3,4,12} {1,5,12} {2,5,12} {3,5,12} {4,5,12} {1,6,12} {2,6,12} {3,6,12} {4,6,12} {5,6,12} {1,7,12} {2,7,12} {3,7,12} {4,7,12} {5,7,12} {6,7,12} {1,8,12} {2,8,12} {3,8,12} {4,8,12} {5,8,12} {6,8,12} {7,8,12} {1,9,12} {2,9,12} {3,9,12} {4,9,12} {5,9,12} {6,9,12} {7,9,12} {8,9,12} {1,10,12} {2,10,12} {3,10,12} {4,10,12} {5,10,12} {6,10,12} {7,10,12} {8,10,12} {9,10,12} {1,11,12} {2,11,12} {3,11,12} {4,11,12} {5,11,12} {6,11,12} {7,11,12} {8,11,12} {9,11,12}
Non-bases (8){1,2,3} {1,4,5} {2,4,6} {3,5,7} {3,6,8} {6,7,9} {1,9,10} {10,11,12}
Circuits (431){1,2,3} {1,4,5} {2,3,4,5} {2,4,6} {1,3,4,6} {1,2,5,6} {1,3,5,6} {2,3,5,6} {3,4,5,6} {1,2,4,7} {1,3,4,7} {2,3,4,7} {1,2,5,7} {3,5,7} {2,4,5,7} {1,2,6,7} {1,3,6,7} {2,3,6,7} {1,4,6,7} {3,4,6,7} {1,5,6,7} {2,5,6,7} {4,5,6,7} {1,2,4,8} {1,3,4,8} {2,3,4,8} {1,2,5,8} {1,3,5,8} {2,3,5,8} {2,4,5,8} {3,4,5,8} {1,2,6,8} {3,6,8} {1,4,6,8} {1,5,6,8} {2,5,6,8} {4,5,6,8} {1,2,7,8} {1,3,7,8} {2,3,7,8} {1,4,7,8} {2,4,7,8} {3,4,7,8} {1,5,7,8} {2,5,7,8} {4,5,7,8} {1,6,7,8} {2,6,7,8} {4,6,7,8} {5,6,7,8} {1,2,4,9} {1,3,4,9} {2,3,4,9} {1,2,5,9} {1,3,5,9} {2,3,5,9} {2,4,5,9} {3,4,5,9} {1,2,6,9} {1,3,6,9} {2,3,6,9} {1,4,6,9} {3,4,6,9} {1,5,6,9} {2,5,6,9} {3,5,6,9} {4,5,6,9} {1,2,7,9} {1,3,7,9} {2,3,7,9} {1,4,7,9} {2,4,7,9} {3,4,7,9} {1,5,7,9} {2,5,7,9} {4,5,7,9} {6,7,9} {1,2,8,9} {1,3,8,9} {2,3,8,9} {1,4,8,9} {2,4,8,9} {3,4,8,9} {1,5,8,9} {2,5,8,9} {3,5,8,9} {4,5,8,9} {1,6,8,9} {2,6,8,9} {4,6,8,9} {5,6,8,9} {1,7,8,9} {2,7,8,9} {3,7,8,9} {4,7,8,9} {5,7,8,9} {1,2,4,10} {1,3,4,10} {2,3,4,10} {1,2,5,10} {1,3,5,10} {2,3,5,10} {2,4,5,10} {3,4,5,10} {1,2,6,10} {1,3,6,10} {2,3,6,10} {1,4,6,10} {3,4,6,10} {1,5,6,10} {2,5,6,10} {3,5,6,10} {4,5,6,10} {1,2,7,10} {1,3,7,10} {2,3,7,10} {1,4,7,10} {2,4,7,10} {3,4,7,10} {1,5,7,10} {2,5,7,10} {4,5,7,10} {1,6,7,10} {2,6,7,10} {3,6,7,10} {4,6,7,10} {5,6,7,10} {1,2,8,10} {1,3,8,10} {2,3,8,10} {1,4,8,10} {2,4,8,10} {3,4,8,10} {1,5,8,10} {2,5,8,10} {3,5,8,10} {4,5,8,10} {1,6,8,10} {2,6,8,10} {4,6,8,10} {5,6,8,10} {1,7,8,10} {2,7,8,10} {3,7,8,10} {4,7,8,10} {5,7,8,10} {6,7,8,10} {1,9,10} {2,3,9,10} {2,4,9,10} {3,4,9,10} {2,5,9,10} {3,5,9,10} {4,5,9,10} {2,6,9,10} {3,6,9,10} {4,6,9,10} {5,6,9,10} {2,7,9,10} {3,7,9,10} {4,7,9,10} {5,7,9,10} {2,8,9,10} {3,8,9,10} {4,8,9,10} {5,8,9,10} {6,8,9,10} {7,8,9,10} {1,2,4,11} {1,3,4,11} {2,3,4,11} {1,2,5,11} {1,3,5,11} {2,3,5,11} {2,4,5,11} {3,4,5,11} {1,2,6,11} {1,3,6,11} {2,3,6,11} {1,4,6,11} {3,4,6,11} {1,5,6,11} {2,5,6,11} {3,5,6,11} {4,5,6,11} {1,2,7,11} {1,3,7,11} {2,3,7,11} {1,4,7,11} {2,4,7,11} {3,4,7,11} {1,5,7,11} {2,5,7,11} {4,5,7,11} {1,6,7,11} {2,6,7,11} {3,6,7,11} {4,6,7,11} {5,6,7,11} {1,2,8,11} {1,3,8,11} {2,3,8,11} {1,4,8,11} {2,4,8,11} {3,4,8,11} {1,5,8,11} {2,5,8,11} {3,5,8,11} {4,5,8,11} {1,6,8,11} {2,6,8,11} {4,6,8,11} {5,6,8,11} {1,7,8,11} {2,7,8,11} {3,7,8,11} {4,7,8,11} {5,7,8,11} {6,7,8,11} {1,2,9,11} {1,3,9,11} {2,3,9,11} {1,4,9,11} {2,4,9,11} {3,4,9,11} {1,5,9,11} {2,5,9,11} {3,5,9,11} {4,5,9,11} {1,6,9,11} {2,6,9,11} {3,6,9,11} {4,6,9,11} {5,6,9,11} {1,7,9,11} {2,7,9,11} {3,7,9,11} {4,7,9,11} {5,7,9,11} {1,8,9,11} {2,8,9,11} {3,8,9,11} {4,8,9,11} {5,8,9,11} {6,8,9,11} {7,8,9,11} {1,2,10,11} {1,3,10,11} {2,3,10,11} {1,4,10,11} {2,4,10,11} {3,4,10,11} {1,5,10,11} {2,5,10,11} {3,5,10,11} {4,5,10,11} {1,6,10,11} {2,6,10,11} {3,6,10,11} {4,6,10,11} {5,6,10,11} {1,7,10,11} {2,7,10,11} {3,7,10,11} {4,7,10,11} {5,7,10,11} {6,7,10,11} {1,8,10,11} {2,8,10,11} {3,8,10,11} {4,8,10,11} {5,8,10,11} {6,8,10,11} {7,8,10,11} {2,9,10,11} {3,9,10,11} {4,9,10,11} {5,9,10,11} {6,9,10,11} {7,9,10,11} {8,9,10,11} {1,2,4,12} {1,3,4,12} {2,3,4,12} {1,2,5,12} {1,3,5,12} {2,3,5,12} {2,4,5,12} {3,4,5,12} {1,2,6,12} {1,3,6,12} {2,3,6,12} {1,4,6,12} {3,4,6,12} {1,5,6,12} {2,5,6,12} {3,5,6,12} {4,5,6,12} {1,2,7,12} {1,3,7,12} {2,3,7,12} {1,4,7,12} {2,4,7,12} {3,4,7,12} {1,5,7,12} {2,5,7,12} {4,5,7,12} {1,6,7,12} {2,6,7,12} {3,6,7,12} {4,6,7,12} {5,6,7,12} {1,2,8,12} {1,3,8,12} {2,3,8,12} {1,4,8,12} {2,4,8,12} {3,4,8,12} {1,5,8,12} {2,5,8,12} {3,5,8,12} {4,5,8,12} {1,6,8,12} {2,6,8,12} {4,6,8,12} {5,6,8,12} {1,7,8,12} {2,7,8,12} {3,7,8,12} {4,7,8,12} {5,7,8,12} {6,7,8,12} {1,2,9,12} {1,3,9,12} {2,3,9,12} {1,4,9,12} {2,4,9,12} {3,4,9,12} {1,5,9,12} {2,5,9,12} {3,5,9,12} {4,5,9,12} {1,6,9,12} {2,6,9,12} {3,6,9,12} {4,6,9,12} {5,6,9,12} {1,7,9,12} {2,7,9,12} {3,7,9,12} {4,7,9,12} {5,7,9,12} {1,8,9,12} {2,8,9,12} {3,8,9,12} {4,8,9,12} {5,8,9,12} {6,8,9,12} {7,8,9,12} {1,2,10,12} {1,3,10,12} {2,3,10,12} {1,4,10,12} {2,4,10,12} {3,4,10,12} {1,5,10,12} {2,5,10,12} {3,5,10,12} {4,5,10,12} {1,6,10,12} {2,6,10,12} {3,6,10,12} {4,6,10,12} {5,6,10,12} {1,7,10,12} {2,7,10,12} {3,7,10,12} {4,7,10,12} {5,7,10,12} {6,7,10,12} {1,8,10,12} {2,8,10,12} {3,8,10,12} {4,8,10,12} {5,8,10,12} {6,8,10,12} {7,8,10,12} {2,9,10,12} {3,9,10,12} {4,9,10,12} {5,9,10,12} {6,9,10,12} {7,9,10,12} {8,9,10,12} {1,2,11,12} {1,3,11,12} {2,3,11,12} {1,4,11,12} {2,4,11,12} {3,4,11,12} … (31 more)
Flats by rank (64)
Hyperplanes (50){1,2,3} {3,4} {2,5} {1,4,5} {1,6} {2,4,6} {5,6} {1,7} {2,7} {4,7} {3,5,7} {1,8} {2,8} {4,8} {5,8} {3,6,8} {7,8} {2,9} {3,9} {4,9} {5,9} {6,7,9} {8,9} {2,10} {3,10} {4,10} {5,10} {6,10} {7,10} {8,10} {1,9,10} {1,11} {2,11} {3,11} {4,11} {5,11} {6,11} {7,11} {8,11} {9,11} {1,12} {2,12} {3,12} {4,12} {5,12} {6,12} {7,12} {8,12} {9,12} {10,11,12}
Lines (8){1,2,3} {1,4,5} {2,4,6} {3,5,7} {3,6,8} {6,7,9} {1,9,10} {10,11,12}
Dual (rank 9)

Revlex encoding in this labeling (not canonicalized, so not linked): 0**********************************************************************************************************0***********************************0****************************0******************0*************0******0******0

Bases: {3,5,6,7,8,9,10,11,12} {2,5,6,7,8,9,10,11,12} {1,5,6,7,8,9,10,11,12} {3,4,6,7,8,9,10,11,12} {2,4,6,7,8,9,10,11,12} {1,4,6,7,8,9,10,11,12} {1,3,6,7,8,9,10,11,12} {1,2,6,7,8,9,10,11,12} {3,4,5,7,8,9,10,11,12} {2,4,5,7,8,9,10,11,12} {1,4,5,7,8,9,10,11,12} {2,3,5,7,8,9,10,11,12} {1,2,5,7,8,9,10,11,12} {2,3,4,7,8,9,10,11,12} {1,3,4,7,8,9,10,11,12} {1,2,4,7,8,9,10,11,12} {1,2,3,7,8,9,10,11,12} {3,4,5,6,8,9,10,11,12} {2,4,5,6,8,9,10,11,12} {1,4,5,6,8,9,10,11,12} {2,3,5,6,8,9,10,11,12} {1,3,5,6,8,9,10,11,12} {1,2,5,6,8,9,10,11,12} {2,3,4,6,8,9,10,11,12} {1,3,4,6,8,9,10,11,12} {1,2,3,6,8,9,10,11,12} {2,3,4,5,8,9,10,11,12} {1,3,4,5,8,9,10,11,12} {1,2,4,5,8,9,10,11,12} {1,2,3,5,8,9,10,11,12} {1,2,3,4,8,9,10,11,12} {3,4,5,6,7,9,10,11,12} {2,4,5,6,7,9,10,11,12} {1,4,5,6,7,9,10,11,12} {2,3,5,6,7,9,10,11,12} {1,3,5,6,7,9,10,11,12} {1,2,5,6,7,9,10,11,12} {2,3,4,6,7,9,10,11,12} {1,3,4,6,7,9,10,11,12} {1,2,4,6,7,9,10,11,12} {1,2,3,6,7,9,10,11,12} {2,3,4,5,7,9,10,11,12} {1,3,4,5,7,9,10,11,12} {1,2,3,5,7,9,10,11,12} {1,2,3,4,7,9,10,11,12} {2,3,4,5,6,9,10,11,12} {1,3,4,5,6,9,10,11,12} {1,2,4,5,6,9,10,11,12} {1,2,3,5,6,9,10,11,12} {1,2,3,4,6,9,10,11,12} {1,2,3,4,5,9,10,11,12} {3,4,5,6,7,8,10,11,12} {2,4,5,6,7,8,10,11,12} {1,4,5,6,7,8,10,11,12} {2,3,5,6,7,8,10,11,12} {1,3,5,6,7,8,10,11,12} {1,2,5,6,7,8,10,11,12} {2,3,4,6,7,8,10,11,12} {1,3,4,6,7,8,10,11,12} {1,2,4,6,7,8,10,11,12} {1,2,3,6,7,8,10,11,12} {2,3,4,5,7,8,10,11,12} {1,3,4,5,7,8,10,11,12} {1,2,4,5,7,8,10,11,12} {1,2,3,5,7,8,10,11,12} {1,2,3,4,7,8,10,11,12} {2,3,4,5,6,8,10,11,12} {1,3,4,5,6,8,10,11,12} {1,2,4,5,6,8,10,11,12} {1,2,3,5,6,8,10,11,12} {1,2,3,4,6,8,10,11,12} {2,3,4,5,6,7,10,11,12} {1,3,4,5,6,7,10,11,12} {1,2,4,5,6,7,10,11,12} {1,2,3,5,6,7,10,11,12} {1,2,3,4,6,7,10,11,12} {1,2,3,4,5,7,10,11,12} {1,2,3,4,5,6,10,11,12} {3,4,5,6,7,8,9,11,12} {2,4,5,6,7,8,9,11,12} {1,4,5,6,7,8,9,11,12} {2,3,5,6,7,8,9,11,12} {1,3,5,6,7,8,9,11,12} {1,2,5,6,7,8,9,11,12} {2,3,4,6,7,8,9,11,12} {1,3,4,6,7,8,9,11,12} {1,2,4,6,7,8,9,11,12} {1,2,3,6,7,8,9,11,12} {2,3,4,5,7,8,9,11,12} {1,3,4,5,7,8,9,11,12} {1,2,4,5,7,8,9,11,12} {1,2,3,5,7,8,9,11,12} {1,2,3,4,7,8,9,11,12} {2,3,4,5,6,8,9,11,12} {1,3,4,5,6,8,9,11,12} {1,2,4,5,6,8,9,11,12} {1,2,3,5,6,8,9,11,12} {1,2,3,4,6,8,9,11,12} {1,2,3,4,5,8,9,11,12} {2,3,4,5,6,7,9,11,12} {1,3,4,5,6,7,9,11,12} {1,2,4,5,6,7,9,11,12} {1,2,3,5,6,7,9,11,12} {1,2,3,4,6,7,9,11,12} {1,2,3,4,5,7,9,11,12} {1,2,3,4,5,6,9,11,12} {1,3,4,5,6,7,8,11,12} {1,2,4,5,6,7,8,11,12} {1,2,3,5,6,7,8,11,12} {1,2,3,4,6,7,8,11,12} {1,2,3,4,5,7,8,11,12} {1,2,3,4,5,6,8,11,12} {1,2,3,4,5,6,7,11,12} {3,4,5,6,7,8,9,10,12} {2,4,5,6,7,8,9,10,12} {1,4,5,6,7,8,9,10,12} {2,3,5,6,7,8,9,10,12} {1,3,5,6,7,8,9,10,12} {1,2,5,6,7,8,9,10,12} {2,3,4,6,7,8,9,10,12} {1,3,4,6,7,8,9,10,12} {1,2,4,6,7,8,9,10,12} {1,2,3,6,7,8,9,10,12} {2,3,4,5,7,8,9,10,12} {1,3,4,5,7,8,9,10,12} {1,2,4,5,7,8,9,10,12} {1,2,3,5,7,8,9,10,12} {1,2,3,4,7,8,9,10,12} {2,3,4,5,6,8,9,10,12} {1,3,4,5,6,8,9,10,12} {1,2,4,5,6,8,9,10,12} {1,2,3,5,6,8,9,10,12} {1,2,3,4,6,8,9,10,12} {1,2,3,4,5,8,9,10,12} {2,3,4,5,6,7,9,10,12} {1,3,4,5,6,7,9,10,12} {1,2,4,5,6,7,9,10,12} {1,2,3,5,6,7,9,10,12} {1,2,3,4,6,7,9,10,12} {1,2,3,4,5,7,9,10,12} {1,2,3,4,5,6,9,10,12} {2,3,4,5,6,7,8,10,12} {1,3,4,5,6,7,8,10,12} {1,2,4,5,6,7,8,10,12} {1,2,3,5,6,7,8,10,12} {1,2,3,4,6,7,8,10,12} {1,2,3,4,5,7,8,10,12} {1,2,3,4,5,6,8,10,12} {1,2,3,4,5,6,7,10,12} {2,3,4,5,6,7,8,9,12} {1,3,4,5,6,7,8,9,12} {1,2,4,5,6,7,8,9,12} {1,2,3,5,6,7,8,9,12} {1,2,3,4,6,7,8,9,12} {1,2,3,4,5,7,8,9,12} {1,2,3,4,5,6,8,9,12} {1,2,3,4,5,6,7,9,12} {1,2,3,4,5,6,7,8,12} {3,4,5,6,7,8,9,10,11} {2,4,5,6,7,8,9,10,11} {1,4,5,6,7,8,9,10,11} {2,3,5,6,7,8,9,10,11} {1,3,5,6,7,8,9,10,11} {1,2,5,6,7,8,9,10,11} {2,3,4,6,7,8,9,10,11} {1,3,4,6,7,8,9,10,11} {1,2,4,6,7,8,9,10,11} {1,2,3,6,7,8,9,10,11} {2,3,4,5,7,8,9,10,11} {1,3,4,5,7,8,9,10,11} {1,2,4,5,7,8,9,10,11} {1,2,3,5,7,8,9,10,11} {1,2,3,4,7,8,9,10,11} {2,3,4,5,6,8,9,10,11} {1,3,4,5,6,8,9,10,11} {1,2,4,5,6,8,9,10,11} {1,2,3,5,6,8,9,10,11} {1,2,3,4,6,8,9,10,11} {1,2,3,4,5,8,9,10,11} {2,3,4,5,6,7,9,10,11} {1,3,4,5,6,7,9,10,11} {1,2,4,5,6,7,9,10,11} {1,2,3,5,6,7,9,10,11} {1,2,3,4,6,7,9,10,11} {1,2,3,4,5,7,9,10,11} {1,2,3,4,5,6,9,10,11} {2,3,4,5,6,7,8,10,11} {1,3,4,5,6,7,8,10,11} {1,2,4,5,6,7,8,10,11} {1,2,3,5,6,7,8,10,11} {1,2,3,4,6,7,8,10,11} {1,2,3,4,5,7,8,10,11} {1,2,3,4,5,6,8,10,11} {1,2,3,4,5,6,7,10,11} {2,3,4,5,6,7,8,9,11} {1,3,4,5,6,7,8,9,11} {1,2,4,5,6,7,8,9,11} {1,2,3,5,6,7,8,9,11} {1,2,3,4,6,7,8,9,11} {1,2,3,4,5,7,8,9,11} {1,2,3,4,5,6,8,9,11} {1,2,3,4,5,6,7,9,11} {1,2,3,4,5,6,7,8,11} {2,3,4,5,6,7,8,9,10} {1,3,4,5,6,7,8,9,10} {1,2,4,5,6,7,8,9,10} {1,2,3,5,6,7,8,9,10} {1,2,3,4,6,7,8,9,10} {1,2,3,4,5,7,8,9,10} {1,2,3,4,5,6,8,9,10} {1,2,3,4,5,6,7,9,10} {1,2,3,4,5,6,7,8,10}

Loops: none. Parallel classes of size > 1: none.

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