Matroid database

Matroid 3.12.16228697

Label3.12.16228697
Idr3_n12_0000************0**********0****0**********0**0******************0*****0*************************0***************0************************0****************0************************************0*****0**0************0*****
Rank3
n12
123456789101112

Affine diagram.

Basic invariants

Bases201
Circuits346
Flats45
Cyclic flats18
Loops0
Connected components1
Automorphisms1
Beta invariant27
Girth3
Simpleyes
Connectedyes
Uniformnot computed
Looplessyes
Colooplessyes
Pavingyes
Laminarno
Nestedno
Self dualno
Identically self dualno
Series parallelno
Transversalno
Supersolvableno
Divisionally freeno
Orientableno
Three linesyes

Representability

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

Realization space

Statuscomputed_realization_space
Dimension of realization space11
Expected dimension over ℤ0
Components of realization spacenot computed
Free realization spaceno
Principal idealyes
Birational typenot computed
Birational type componentsnot computed
Good basisnot computed
Good basis v21,4,9

Geometry

Realization space: scheme simple core idnot computed
Smooth char 0not computed
Singular primesnot computed
Realization space: smooth over ℚyes
Realization space: smooth over ℤno
how determined: smoothness method: rigid_arithmetic
Realization space: is regular schemenot computed
Realization space: singular fiber primesnot computed
Realization space: singular fiber characteristicsnone
how determined: singular fiber characteristics method: arithmetic_open_affine_fibers
Realization space: characteristic dimensions
show
[
 {
  "p": 37,
  "d": 0
 }
]
how determined: characteristic dimensions method: rigid_arithmetic
Realization space: characteristic dimension unexpectedyes
Realization space: characteristic dimension variesno

Other

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

Tutte polynomial

\(T = x_{0}^{3} + 9 x_{0}^{2} + x_{0} x_{1}^{2} + 17 x_{0} x_{1} + 27 x_{0} + x_{1}^{9} + 3 x_{1}^{8} + 6 x_{1}^{7} + 10 x_{1}^{6} + 15 x_{1}^{5} + 21 x_{1}^{4} + 28 x_{1}^{3} + 35 x_{1}^{2} + 27 x_{1}\)

Realization space

Ring\(\mathbb{Z}\)
Defining ideal\(\left(37\right)\)
Inequationsnone
Realization matrix\(\begin{pmatrix}1 & 1 & 1 & 0 & 0 & 1 & 1 & 1 & 0 & 1 & 1 & 1 \\ 0 & 1 & 9 & 1 & 1 & 22 & 0 & 18 & 0 & 1 & 18 & 22 \\ 0 & 0 & 0 & 0 & 1 & 22 & 36 & 9 & 1 & 22 & 36 & 3\end{pmatrix}\)

Combinatorics

Computed on the fly from the id.

Bases (201){1,2,5} {1,3,5} {2,3,5} {1,4,5} {2,4,5} {3,4,5} {1,2,6} {1,3,6} {2,3,6} {1,4,6} {2,4,6} {3,4,6} {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} {3,5,7} {4,5,7} {1,6,7} {2,6,7} {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} {4,5,8} {1,6,8} {3,6,8} {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} {1,6,9} {2,6,9} {3,6,9} {4,6,9} {5,6,9} {2,7,9} {3,7,9} {4,7,9} {5,7,9} {6,7,9} {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} {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} {1,9,10} {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} {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} {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} {1,9,12} {2,9,12} {3,9,12} {4,9,12} {5,9,12} {7,9,12} {8,9,12} {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} {6,11,12} {7,11,12} {8,11,12} {9,11,12} {10,11,12}
Non-bases (19){1,2,3} {1,2,4} {1,3,4} {2,3,4} {1,5,6} {2,5,7} {3,6,7} {3,5,8} {2,6,8} {4,5,9} {1,7,9} {4,6,10} {2,9,10} {4,7,11} {8,9,11} {7,8,12} {6,9,12} {1,10,12} {5,11,12}
Circuits (346){1,2,3} {1,2,4} {1,3,4} {2,3,4} {1,5,6} {2,3,5,6} {2,4,5,6} {3,4,5,6} {2,5,7} {1,3,5,7} {1,4,5,7} {3,4,5,7} {1,2,6,7} {3,6,7} {1,4,6,7} {2,4,6,7} {4,5,6,7} {1,2,5,8} {3,5,8} {1,4,5,8} {2,4,5,8} {2,6,8} {1,3,6,8} {1,4,6,8} {3,4,6,8} {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} {4,5,7,8} {1,6,7,8} {4,6,7,8} {5,6,7,8} {1,2,5,9} {1,3,5,9} {2,3,5,9} {4,5,9} {1,2,6,9} {1,3,6,9} {2,3,6,9} {1,4,6,9} {2,4,6,9} {3,4,6,9} {2,5,6,9} {3,5,6,9} {1,7,9} {2,3,7,9} {2,4,7,9} {3,4,7,9} {3,5,7,9} {2,6,7,9} {4,6,7,9} {5,6,7,9} {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} {1,6,8,9} {3,6,8,9} {4,6,8,9} {5,6,8,9} {2,7,8,9} {3,7,8,9} {4,7,8,9} {5,7,8,9} {6,7,8,9} {1,2,5,10} {1,3,5,10} {2,3,5,10} {1,4,5,10} {2,4,5,10} {3,4,5,10} {1,2,6,10} {1,3,6,10} {2,3,6,10} {4,6,10} {2,5,6,10} {3,5,6,10} {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} {3,5,7,10} {4,5,7,10} {1,6,7,10} {2,6,7,10} {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} {4,5,8,10} {1,6,8,10} {3,6,8,10} {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} {2,9,10} {1,3,9,10} {1,4,9,10} {3,4,9,10} {1,5,9,10} {3,5,9,10} {1,6,9,10} {3,6,9,10} {5,6,9,10} {3,7,9,10} {4,7,9,10} {5,7,9,10} {6,7,9,10} {1,8,9,10} {3,8,9,10} {4,8,9,10} {5,8,9,10} {6,8,9,10} {7,8,9,10} {1,2,5,11} {1,3,5,11} {2,3,5,11} {1,4,5,11} {2,4,5,11} {3,4,5,11} {1,2,6,11} {1,3,6,11} {2,3,6,11} {1,4,6,11} {2,4,6,11} {3,4,6,11} {2,5,6,11} {3,5,6,11} {4,5,6,11} {1,2,7,11} {1,3,7,11} {2,3,7,11} {4,7,11} {1,5,7,11} {3,5,7,11} {1,6,7,11} {2,6,7,11} {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} {4,5,8,11} {1,6,8,11} {3,6,8,11} {4,6,8,11} {5,6,8,11} {1,7,8,11} {2,7,8,11} {3,7,8,11} {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} {1,6,9,11} {2,6,9,11} {3,6,9,11} {4,6,9,11} {5,6,9,11} {2,7,9,11} {3,7,9,11} {5,7,9,11} {6,7,9,11} {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} {5,6,10,11} {1,7,10,11} {2,7,10,11} {3,7,10,11} {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} {1,9,10,11} {3,9,10,11} {4,9,10,11} {5,9,10,11} {6,9,10,11} {7,9,10,11} {1,2,5,12} {1,3,5,12} {2,3,5,12} {1,4,5,12} {2,4,5,12} {3,4,5,12} {1,2,6,12} {1,3,6,12} {2,3,6,12} {1,4,6,12} {2,4,6,12} {3,4,6,12} {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} {3,5,7,12} {4,5,7,12} {1,6,7,12} {2,6,7,12} {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} {4,5,8,12} {1,6,8,12} {3,6,8,12} {4,6,8,12} {5,6,8,12} {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} {6,9,12} {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} {1,10,12} {2,3,10,12} {2,4,10,12} {3,4,10,12} {2,5,10,12} {3,5,10,12} {4,5,10,12} {2,6,10,12} {3,6,10,12} {5,6,10,12} {2,7,10,12} {3,7,10,12} {4,7,10,12} {5,7,10,12} {6,7,10,12} {2,8,10,12} {3,8,10,12} {4,8,10,12} {5,8,10,12} {6,8,10,12} {3,9,10,12} {4,9,10,12} {5,9,10,12} {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} {5,11,12} {1,6,11,12} {2,6,11,12} {3,6,11,12} {4,6,11,12} {1,7,11,12} {2,7,11,12} {3,7,11,12} {6,7,11,12} {1,8,11,12} {2,8,11,12} {3,8,11,12} {4,8,11,12} {6,8,11,12} {1,9,11,12} {2,9,11,12} {3,9,11,12} {4,9,11,12} {7,9,11,12} {2,10,11,12} {3,10,11,12} {4,10,11,12} {6,10,11,12} {7,10,11,12} {8,10,11,12} {9,10,11,12}
Flats by rank (45)
Hyperplanes (31){1,2,3,4} {1,5,6} {2,5,7} {3,6,7} {1,8} {4,8} {3,5,8} {2,6,8} {3,9} {4,5,9} {1,7,9} {3,10} {5,10} {4,6,10} {7,10} {8,10} {2,9,10} {1,11} {2,11} {3,11} {6,11} {4,7,11} {8,9,11} {10,11} {2,12} {3,12} {4,12} {7,8,12} {6,9,12} {1,10,12} {5,11,12}
Lines (16){1,2,3,4} {1,5,6} {2,5,7} {3,6,7} {3,5,8} {2,6,8} {4,5,9} {1,7,9} {4,6,10} {2,9,10} {4,7,11} {8,9,11} {7,8,12} {6,9,12} {1,10,12} {5,11,12}
Dual (rank 9)

Revlex encoding in this labeling (not canonicalized, so not linked): *****0************0**0*****0************************************0****************0************************0***************0*************************0*****0******************0**0**********0****0**********0************0000

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

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

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