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 21,701–21,750

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.4302343122071✓all6?
3.12.4303043122071✓all6?
3.12.4303173122071✓all6?
3.12.4303303122061✓all6?
3.12.4303683122091✓all6?
3.12.4303803122081✓all6?
3.12.4303983122081✓all6?
3.12.4304073122071✓all6?
3.12.4304113122071✓all6?
3.12.4304223122081✓all6?
3.12.4304683122072✓all6?
3.12.4304733122071✓all6?
3.12.4305183122091✓all6?
3.12.4305373122071✓all6?
3.12.4305593122081✓all6?
3.12.4305943122081✓all6?
3.12.4305963122071✓all6?
3.12.4305973122091✓all6?
3.12.4306133122081✓all6?
3.12.4306243122071✓all6?
3.12.4306423122081✓all6?
3.12.4306733122091✓all6?
3.12.4306873122101✓all6?
3.12.4307103122091✓all6?
3.12.4307123122091✓all6?
3.12.4307553122081✓all6?
3.12.4307943122081✓all6?
3.12.4308503122081✓all6?
3.12.4308543122071✓all6?
3.12.4308833122091✓all6?
3.12.4308953122081✓all6?
3.12.4309243122081✓all6?
3.12.4309333122071✓all6?
3.12.4309403122081✓all6?
3.12.4309593122081✓all6?
3.12.4309733122071✓all6?
3.12.4309833122081✓all6?
3.12.4310043122071✓all6?
3.12.4311123122081✓all6?
3.12.4311303122071✓all6?
3.12.4311463122081✓all6?
3.12.4311513122071✓all6?
3.12.4311683122071✓all6?
3.12.4311773122081✓all6?
3.12.4312073122101✓all6?
3.12.4312973122091✓all6?
3.12.4313093122071✓all6?
3.12.4313903122071✓all6?
3.12.4314453122081✓all6?
3.12.4315323122071✓all6?

« first ‹ prev next ›