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 21,401–21,450

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.26562173122071✓all7?
3.12.26563133122071✓all7?
3.12.26563873122071✓all7?
3.12.26564623122061✓all7?
3.12.26565803122091✓all7?
3.12.26567083122081✓all7?
3.12.26567913122071✓all7?
3.12.26572233122081✓all7?
3.12.26578823122071✓all7?
3.12.26584813122071✓all7?
3.12.26590283122061✓all7?
3.12.26594533122061✓all7?
3.12.26599493122061✓all7?
3.12.26611783122061✓all7?
3.12.26626763122081✓all7?
3.12.26634923122071✓all7?
3.12.26660123122061✓all7?
3.12.26670833122071✓all7?
3.12.26706813122051✓all7?
3.12.26733253122071✓all7?
3.12.26742563122051✓all7?
3.12.26777103122071✓all7?
3.12.26812983122071✓all7?
3.12.26813603122081✓all7?
3.12.26838333122071✓all7?
3.12.26886423122071✓all7?
3.12.26946233122071✓all7?
3.12.26988333122071✓all7?
3.12.27041993122081✓all7?
3.12.27068793122061✓all7?
3.12.27091923122081✓all7?
3.12.27092043122081✓all7?
3.12.27092103122081✓all7?
3.12.27092413122071✓all7?
3.12.27093513122091✓all7?
3.12.27095553122071✓all7?
3.12.27098123122071✓all7?
3.12.27102003122061✓all7?
3.12.27107323122071✓all7?
3.12.27111163122081✓all7?
3.12.27111333122071✓all7?
3.12.27111423122081✓all7?
3.12.27111563122071✓all7?
3.12.27112513122071✓all7?
3.12.27113353122061✓all7?
3.12.27116093122071✓all7?
3.12.27118323122071✓all7?
3.12.27126313122081✓all7?
3.12.27126413122081✓all7?
3.12.27126503122071✓all7?

« first ‹ prev next ›