Matroid 2.4.0
| Label | 2.4.0 |
|---|---|
| Id | r2_n4_****** |
| Rank | 2 |
| n | 4 |
Basic invariants
Representability
| Characteristic set | not computed |
|---|---|
| Realizable | yes |
| Realizable char0 | not computed |
| Regular | no |
| Binary | no |
| Ternary | yes |
| Quaternary | yes |
| Graphic | no |
Realization space
Geometry
Other
| Char poly splits | not computed |
|---|---|
| Simplicial arrangement | yes |
| Realization space: n qbar components | 1 |
Tutte polynomial
\(T = x_{0}^{2} + 2 x_{0} + x_{1}^{2} + 2 x_{1}\)
Combinatorics
Computed on the fly from the id.
Bases (6)
{1,2} {1,3} {2,3} {1,4} {2,4} {3,4}Non-bases (0)
Circuits (4)
{1,2,3} {1,2,4} {1,3,4} {2,3,4}Flats by rank (6)
- rank 0 (1): {}
- rank 1 (4): {1} {2} {3} {4}
- rank 2 (1): {1,2,3,4}
Hyperplanes (4)
{1} {2} {3} {4}Dual (rank 2)
Revlex encoding in this labeling (not canonicalized, so not linked): ******
Bases: {3,4} {2,4} {1,4} {2,3} {1,3} {1,2}
Loops: none. Parallel classes of size > 1: none.
Downloads
- Record as JSON
- OSCAR:
matroid_from_revlex_basis_encoding("******", 2, 4)