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13 matroids

label ▲rank ⇅n ⇅#bases ⇅#automorphisms ⇅simple ⇅char set ⇅rs dim ⇅birational type ⇅
3.11.456713111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.457703111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.465213111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.481543111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.481953111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.527203111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.538453111511✓all but 20point over Q(a)/(a^4 - 2*a - 1)
3.11.919033111491✓all1point over Q(a)/(a^4 - 2*a - 1)
3.11.1298743111491✓all2point over Q(a)/(a^4 - 2*a - 1)
3.11.1318033111491✓∅-1point over Q(a)/(a^4 - 2*a - 1)
4.9.26673491141✓all but 23point over Q(a)/(a^4 - 2*a - 1)
4.9.56171491141✓∅-1point over Q(a)/(a^4 - 2*a - 1)
4.9.57659491141✓all2point over Q(a)/(a^4 - 2*a - 1)