Matroid database

Search

…or describe it by its bases, non-bases or lines

Any labeling of the ground set $\{1,\dots,n\}$ will do: we compute the canonical id. Sets are written as {1,2,3}, one per line, or, when $n \le 9$, as digit strings such as 123 145. Lines are the lines with at least three points of a simple rank-3 matroid. A revlex encoding is a string of * and 0.

84,161 matroids, showing 21,601–21,650

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.28791123122071✓all7?
3.12.28810503122061✓all7?
3.12.28840493122061✓all7?
3.12.28893773122041✓all7?
3.12.28980123122051✓all7?
3.12.29054893122061✓all7?
3.12.29174873122041✓all7?
3.12.29266103122071✓all7?
3.12.29266243122061✓all7?
3.12.29266643122041✓all7?
3.12.29266713122061✓all7?
3.12.29266823122051✓all7?
3.12.29266853122051✓all7?
3.12.29267543122061✓all7?
3.12.29267593122051✓all7?
3.12.29267643122051✓all7?
3.12.29267743122061✓all7?
3.12.29267753122061✓all7?
3.12.29269713122051✓all7?
3.12.29272343122041✓all7?
3.12.29275643122071✓all7?
3.12.29280683122071✓all7?
3.12.29286573122051✓all7?
3.12.29300803122061✓all7?
3.12.29322343122051✓all7?
3.12.29358663122051✓all7?
3.12.29386493122071✓all7?
3.12.29415663122051✓all7?
3.12.29424543122061✓all7?
3.12.29456983122041✓all7?
3.12.29555283122051✓all7?
3.12.29597863122071✓all7?
3.12.29751483122051✓all7?
3.12.29837203122061✓all7?
3.12.29920913122061✓all7?
3.12.29929333122081✓all7?
3.12.29953993122061✓all7?
3.12.30105833122071✓all7?
3.12.30106113122061✓all7?
3.12.30106203122061✓all7?
3.12.30106323122071✓all7?
3.12.30106333122061✓all7?
3.12.30106493122051✓all7?
3.12.30106583122061✓all7?
3.12.30106773122061✓all7?
3.12.30107203122041✓all7?
3.12.30107793122051✓all7?
3.12.30107813122051✓all7?
3.12.30109063122051✓all7?
3.12.30112863122051✓all7?

« first ‹ prev next ›