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 21,651–21,700

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.30404043122061✓all7?
3.12.30404093122051✓all7?
3.12.30404293122041✓all7?
3.12.30404463122031✓all7?
3.12.30404723122041✓all7?
3.12.30406493122051✓all7?
3.12.30409823122062✓all7?
3.12.30413453122071✓all7?
3.12.30419573122081✓all7?
3.12.30426763122061✓all7?
3.12.30451283122051✓all7?
3.12.30483743122081✓all7?
3.12.30486103122061✓all7?
3.12.30587073122041✓all7?
3.12.30624443122081✓all7?
3.12.30691063122051✓all7?
3.12.30771473122094✓all7?
3.12.30815243122091✓all7?
3.12.30815363122091✓all7?
3.12.30815913122101✓all7?
3.12.30816253122091✓all7?
3.12.30816333122091✓all7?
3.12.30816573122091✓all7?
3.12.30816673122091✓all7?
3.12.30816683122101✓all7?
3.12.30816703122091✓all7?
3.12.30818143122081✓all7?
3.12.30818433122081✓all7?
3.12.30818463122081✓all7?
3.12.30818473122081✓all7?
3.12.30818493122091✓all7?
3.12.30818723122081✓all7?
3.12.30818783122081✓all7?
3.12.30819053122091✓all7?
3.12.30819653122081✓all7?
3.12.30820913122092✓all7?
3.12.30821543122091✓all7?
3.12.30823263122091✓all7?
3.12.30825353122071✓all7?
3.12.30830513122081✓all7?
3.12.30837203122101✓all7?
3.12.30837283122101✓all7?
3.12.30837293122091✓all7?
3.12.30837313122091✓all7?
3.12.30837983122081✓all7?
3.12.30838123122081✓all7?
3.12.30838713122081✓all7?
3.12.30838873122081✓all7?
3.12.30839273122081✓all7?
3.12.30840073122071✓all7?

« first ‹ prev next ›