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.

381,906 matroids, showing 19,051–19,100

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.3655423122091✓all6?
3.12.3655623122081✓all6?
3.12.3655713122081✓all6?
3.12.3656253122081✓all6?
3.12.3656333122081✓all6?
3.12.3656863122081✓all6?
3.12.3657093122091✓all6?
3.12.3657323122071✓all6?
3.12.3657603122071✓all6?
3.12.3658703122071✓all6?
3.12.3658843122081✓all6?
3.12.3658853122081✓all6?
3.12.3659023122071✓all6?
3.12.3659383122091✓all6?
3.12.3659493122091✓all6?
3.12.3659553122091✓all6?
3.12.3659863122081✓all6?
3.12.3659973122091✓all6?
3.12.3660073122081✓all6?
3.12.3660253122091✓all6?
3.12.3661233122081✓all6?
3.12.3662183122091✓all6?
3.12.3662573122081✓all6?
3.12.3662603122081✓all6?
3.12.3662623122081✓all6?
3.12.3662893122081✓all6?
3.12.3662983122081✓all6?
3.12.3663533122071✓all6?
3.12.3664463122091✓all6?
3.12.3664793122081✓all6?
3.12.3665663122071✓all6?
3.12.3666033122081✓all6?
3.12.3666563122071✓all6?
3.12.3666613122081✓all6?
3.12.3666703122071✓all6?
3.12.3666873122081✓all6?
3.12.3667563122081✓all6?
3.12.3668033122071✓all6?
3.12.3668083122071✓all6?
3.12.3668143122081✓all6?
3.12.3668193122071✓all6?
3.12.3668353122081✓all6?
3.12.3668363122081✓all6?
3.12.3668473122071✓all6?
3.12.3668533122071✓all6?
3.12.3668543122071✓all6?
3.12.3668673122081✓all6?
3.12.3668693122071✓all6?
3.12.3668873122071✓all6?
3.12.3669223122071✓all6?

« first ‹ prev next ›