Matroid database

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4,791,932 matroids, showing 1–50

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.67231220872✓all but 21?
3.12.70673122081✓all but 21?
3.12.70793122082✓all2?
3.12.73633122081✓all1?
3.12.73813122082✓all1?
3.12.74533122086✓all2?
3.12.88163122082✓all3?
3.12.88323122081✓all but 22?
3.12.88493122082✓all3?
3.12.89133122082✓all1?
3.12.92313122082✓all2?
3.12.92443122081✓∅-1?
3.12.92633122081✓∅-1?
3.12.93053122082✓all but 21?
3.12.98303122086✓all2?
3.12.98393122082✓all2?
3.12.99003122082✓all1?
3.12.99723122081✓all but 22?
3.12.99933122081✓all1?
3.12.100113122081✓∅-1?
3.12.1175931220812✓all but 20?
3.12.117723122088✓all2?
3.12.1177431220824✓all1?
3.12.129223122072✓all but 20?
3.12.135803122072✓all2?
3.12.135833122076✓all4?
3.12.137443122083✓all4?
3.12.137863122081✓all2?
3.12.137893122082✓all3?
3.12.137953122082✓all1?
3.12.137973122086✓all2?
3.12.141863122071✓all2?
3.12.141883122071✓all2?
3.12.141963122072✓all2?
3.12.141983122072✓∅-1?
3.12.143103122072✓all but 21?
3.12.143283122072✓all4?
3.12.143403122076✓∅-1?
3.12.143423122071✓all but 2,31?
3.12.144813122064✓∅-1?
3.12.238603122082✓all but 21?
3.12.239053122082✓all2?
3.12.239103122086✓all but 21?
3.12.239363122081✓all2?
3.12.239413122086✓all3?
3.12.241773122082✓all2?
3.12.242203122082✓all but 21?
3.12.242263122082✓all but 22?
3.12.275543122081✓all2?
3.12.275573122081✓all but 20?

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