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 18,901–18,950

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.19427773122071✓all7?
3.12.19429273122081✓all7?
3.12.19430663122071✓all7?
3.12.19431583122071✓all7?
3.12.19432093122061✓all7?
3.12.19432833122061✓all7?
3.12.19432933122071✓all7?
3.12.19433123122071✓all7?
3.12.19433133122071✓all7?
3.12.19433213122071✓all7?
3.12.19433323122061✓all7?
3.12.19433393122061✓all7?
3.12.19433663122071✓all7?
3.12.19433773122071✓all7?
3.12.19434993122071✓all7?
3.12.19436683122071✓all7?
3.12.19437783122071✓all7?
3.12.19438963122061✓all7?
3.12.19440323122061✓all7?
3.12.19442953122071✓all7?
3.12.19443023122061✓all7?
3.12.19443533122051✓all7?
3.12.19443553122051✓all7?
3.12.19443853122081✓all7?
3.12.19443963122081✓all7?
3.12.19444133122081✓all7?
3.12.19444223122071✓all7?
3.12.19444703122071✓all7?
3.12.19444833122071✓all7?
3.12.19444883122081✓all7?
3.12.19444993122071✓all7?
3.12.19445153122071✓all7?
3.12.19445173122081✓all7?
3.12.19445243122071✓all7?
3.12.19445303122071✓all7?
3.12.19445633122071✓all7?
3.12.19447443122071✓all7?
3.12.19447643122061✓all7?
3.12.19447953122071✓all7?
3.12.19448063122061✓all7?
3.12.19448123122061✓all7?
3.12.19448253122081✓all7?
3.12.19449293122071✓all7?
3.12.19449423122071✓all7?
3.12.19450093122091✓all7?
3.12.19451063122061✓all7?
3.12.19452613122071✓all7?
3.12.19453013122071✓all7?
3.12.19453463122061✓all7?
3.12.19453783122071✓all7?

« first ‹ prev next ›