Matroid database

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31,899,134 matroids, showing 1–50

label ▼rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.12.3189913331212177280✗all4?
3.12.318991323122161280✗all but 22?
3.12.31899131312360480✗all but 21?
3.12.31899130312434560✗all2?
3.12.31899129312528800✗all but 21?
3.12.31899128312634560✗all1?
3.12.31899127312760480✗all2?
3.12.318991263128161280✗all but 21?
3.12.318991253129725760✗all2?
3.12.31899124312107257600✗all1?
3.12.318991233123241920✗all but 21?
3.12.31899122312440320✗∅-1?
3.12.31899121312520160✗all2?
3.12.3189912031268640✗all2?
3.12.3189911931278640✗all2?
3.12.3189911831285760✗all but 21?
3.12.3189911731295760✗all3?
3.12.31899116312105760✗all2?
3.12.31899115312115760✗all2?
3.12.31899114312128640✗all2?
3.12.31899113312138640✗all2?
3.12.318991123121420160✗∅-1?
3.12.318991113121520160✗all3?
3.12.318991103121680640✗all3?
3.12.318991093121780640✗all2?
3.12.3189910831218725760✗all but 21?
3.12.3189910731219725760✗∅-1?
3.12.318991063126120960✗∅-1?
3.12.3189910531285760✗∅-1?
3.12.3189910431298640✗all2?
3.12.3189910331298640✗all2?
3.12.31899102312111440✗all2?
3.12.31899101312124320✗all2?
3.12.31899100312123456✗all2?
3.12.31899099312141152✗all4?
3.12.31899098312153456✗all1?
3.12.31899097312154320✗all4?
3.12.31899096312171440✗all1?
3.12.31899095312184320✗all5?
3.12.31899094312188640✗all but 22?
3.12.31899093312202880✗{13}-1?
3.12.31899092312218640✗all2?
3.12.318990913122130240✗all2?
3.12.318990903122310080✗all2?
3.12.318990893122430240✗all2?
3.12.3189908831224241920✗all2?
3.12.318990873122680640✗all1?
3.12.3189908631227241920✗all2?
3.12.318990853121086400✗all but 22?
3.12.31899084312125760✗all but 21?

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