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 18,901–18,950

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.3618813122111✓all6?
3.12.3618823122101✓all6?
3.12.3619323122081✓all6?
3.12.3619723122091✓all6?
3.12.3619763122081✓all6?
3.12.3619963122081✓all6?
3.12.3620863122091✓all6?
3.12.3620953122091✓all6?
3.12.3621103122091✓all6?
3.12.3621153122091✓all6?
3.12.3621243122081✓all6?
3.12.3621343122101✓all6?
3.12.3621433122081✓all6?
3.12.3621943122091✓all6?
3.12.3621953122091✓all6?
3.12.3622553122081✓all6?
3.12.3622773122091✓all6?
3.12.3623203122091✓all6?
3.12.3623213122091✓all6?
3.12.3623623122081✓all6?
3.12.3624203122101✓all6?
3.12.3624593122081✓all6?
3.12.3624663122081✓all6?
3.12.3624703122071✓all6?
3.12.3624753122081✓all6?
3.12.3624783122081✓all6?
3.12.3625193122081✓all6?
3.12.3625543122081✓all6?
3.12.3625593122081✓all6?
3.12.3625793122091✓all6?
3.12.3626033122091✓all6?
3.12.3626153122081✓all6?
3.12.3626263122081✓all6?
3.12.3626953122081✓all6?
3.12.3627153122081✓all6?
3.12.3627203122081✓all6?
3.12.3627243122091✓all6?
3.12.3627933122081✓all6?
3.12.3627963122081✓all6?
3.12.3628173122081✓all6?
3.12.3628193122081✓all6?
3.12.3628513122081✓all6?
3.12.3628833122081✓all6?
3.12.3629203122081✓all6?
3.12.3629223122071✓all6?
3.12.3629243122071✓all6?
3.12.3629413122081✓all6?
3.12.3629773122071✓all6?
3.12.3630053122081✓all6?
3.12.3630143122081✓all6?

« first ‹ prev next ›