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 21,851–21,900

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.4335713122102✓all6?
3.12.4335933122081✓all6?
3.12.4335973122091✓all6?
3.12.4336023122091✓all6?
3.12.4336043122091✓all6?
3.12.4336233122091✓all6?
3.12.4336263122091✓all6?
3.12.4336313122081✓all6?
3.12.4336343122081✓all6?
3.12.4336473122081✓all6?
3.12.4336533122091✓all6?
3.12.4336583122091✓all6?
3.12.4336793122081✓all6?
3.12.4336963122091✓all6?
3.12.4337053122081✓all6?
3.12.4337373122071✓all6?
3.12.4337403122071✓all6?
3.12.4337493122071✓all6?
3.12.4337573122071✓all6?
3.12.4337583122081✓all6?
3.12.4338093122081✓all6?
3.12.4338293122081✓all6?
3.12.4338353122081✓all6?
3.12.4338463122081✓all6?
3.12.4338493122081✓all6?
3.12.4338543122071✓all6?
3.12.4338583122071✓all6?
3.12.4338593122071✓all6?
3.12.4338623122071✓all6?
3.12.4338823122071✓all6?
3.12.4339633122081✓all6?
3.12.4339973122081✓all6?
3.12.4340023122081✓all6?
3.12.4340143122071✓all6?
3.12.4340193122071✓all6?
3.12.4340223122071✓all6?
3.12.4340233122061✓all6?
3.12.4340413122071✓all6?
3.12.4340603122071✓all6?
3.12.4340953122081✓all6?
3.12.4341343122071✓all6?
3.12.4341673122091✓all6?
3.12.4341913122081✓all6?
3.12.4341923122091✓all6?
3.12.4342043122081✓all6?
3.12.4342083122081✓all6?
3.12.4342103122081✓all6?
3.12.4342173122071✓all6?
3.12.4342353122071✓all6?
3.12.4342383122071✓all6?

« first ‹ prev next ›