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# ab:aab=b,abba=a b/a bbbbb=b ab=bbb bbbba=a aa=bba
| 1 | a | b | ba | b2 | b2a | b3 | b3a | b4 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | a | b | ba | b2 | b2a | b3 | b3a | b4 |
| a | a | b2a | b3 | b3a | b4 | a | b | ba | b2 |
| b | b | ba | b2 | b2a | b3 | b3a | b4 | a | b |
| ba | ba | b3a | b4 | a | b | ba | b2 | b2a | b3 |
| b2 | b2 | b2a | b3 | b3a | b4 | a | b | ba | b2 |
| b2a | b2a | a | b | ba | b2 | b2a | b3 | b3a | b4 |
| b3 | b3 | b3a | b4 | a | b | ba | b2 | b2a | b3 |
| b3a | b3a | ba | b2 | b2a | b3 | b3a | b4 | a | b |
| b4 | b4 | a | b | ba | b2 | b2a | b3 | b3a | b4 |
| Σ | # | Presentation | Description | Related |
|---|---|---|---|---|
| 7 | 118 | ⟨a, b | aaa=b, bbb=1⟩ | Isomorphic to ℤ9 | 562 iso |
| 8 | 568 | ⟨a, b | aaa=a, abb=b⟩ | Finite non-commutative monoid with 9 elements | 5 iso |
| 8 | 571 | ⟨a, b | aaa=a, bbb=a⟩ | Isomorphic to ℕ(9 = 3) | 48 iso |
| 8 | 581 | ⟨a, b | aaa=b, bbb=a⟩ | Isomorphic to ℕ(9 = 1) | 62 iso |
| 8 | 601 | ⟨a, b | aba=b, bab=a⟩ | Finite non-commutative monoid with 9 elements | 3 iso |
| 9 | 1584 | ⟨a, b | aaa=aa, bbb=a⟩ | Isomorphic to ℕ(9 = 6) | 16 iso |
| 9 | 1595 | ⟨a, b | aaa=ab, bab=b⟩ | Finite non-commutative monoid with 9 elements | 4 iso, 5 anti-iso |
| 9 | 1598 | ⟨a, b | aaa=ab, bbb=a⟩ | Isomorphic to ℕ(9 = 4) | 40 iso |
| 9 | 1608 | ⟨a, b | aaa=bb, bbb=a⟩ | Isomorphic to ℕ(9 = 2) | 70 iso |
| 9 | 1991 | ⟨a, b | aaa=a, abba=b⟩ | Finite non-commutative monoid with 9 elements | 3 iso |
| 9 | 2255 | ⟨a, b | ab=aa, bba=bb⟩ | Finite non-commutative monoid with 9 elements | |
| 10 | 4125 | ⟨a, b | aab=aaa, baa=b⟩ | Finite non-commutative monoid with 9 elements | 1 iso, 1 anti-iso |
| 10 | 4130 | ⟨a, b | aab=aaa, bbb=a⟩ | Isomorphic to ℕ(9 = 7) | 1 iso |
| 10 | 4156 | ⟨a, b | abb=aaa, bbb=a⟩ | Isomorphic to ℕ(9 = 5) | 12 iso |
| 10 | 5035 | ⟨a, b | aaa=aa, abbb=b⟩ | Finite non-commutative monoid with 9 elements | 3 iso |
| 10 | 5079 | ⟨a, b | aaa=bb, aaba=b⟩ | Finite commutative monoid with 9 elements | 8 iso |
| 10 | 5124 | ⟨a, b | aab=aa, bbbb=a⟩ | Isomorphic to ℕ(9 = 8) | 5 iso |
| 10 | 5339 | ⟨a, b | aaa=bb, aab=ab⟩ | Finite non-commutative monoid with 9 elements | 1 iso |
| 10 | 6824 | ⟨a, b | aab=b, bbb=aaa⟩ | Finite commutative monoid with 9 elements | 5 iso |
| 10 | 7139 | ⟨a, b | bb=aa, aaaa=ab⟩ | Finite non-commutative monoid with 9 elements | 3 iso |
| 10 | 9327 | ⟨a, b | ab=a, baaa=bbb⟩ | Finite non-commutative monoid with 9 elements | 3 iso |
| 10 | 9359 | ⟨a, b | ab=a, bbaa=bbb⟩ | Finite non-commutative monoid with 9 elements | 2 iso |
| 11 | 19506 | ⟨a, b | aab=b, aaaaa=ba⟩ | Finite non-commutative monoid with 9 elements | |
| 11 | 19507 | ⟨a, b | aab=b, aaaaa=bb⟩ | Finite commutative monoid with 9 elements | |
| 11 | 20723 | ⟨a, b | ab=aa, aaaaa=bb⟩ | Finite non-commutative monoid with 9 elements | 15 iso |
| 11 | 25656 | ⟨a, b | ab=a, bbbbb=baa⟩ | Finite non-commutative monoid with 9 elements |
14 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 9 | 2072 | ⟨a, b | aab=b, baba=a⟩ | φ(a) = a, φ(b) = b |
| 9 | 2076 | ⟨a, b | aab=b, bbaa=a⟩ | φ(a) = a, φ(b) = b |
| 10 | 6449 | ⟨a, b | aba=a, aaaab=b⟩ | φ(a) = b, φ(b) = ba |
| 11 | 14540 | ⟨a, b | aaba=a, aaaab=b⟩ | φ(a) = b, φ(b) = a |
| 11 | 18972 | ⟨a, b | aab=b, aaabba=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 18980 | ⟨a, b | aab=b, aababa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 18984 | ⟨a, b | aab=b, aabbaa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 18996 | ⟨a, b | aab=b, abaaba=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19000 | ⟨a, b | aab=b, ababaa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19008 | ⟨a, b | aab=b, abbaaa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19028 | ⟨a, b | aab=b, baaaba=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19032 | ⟨a, b | aab=b, baabaa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19040 | ⟨a, b | aab=b, babaaa=a⟩ | φ(a) = a, φ(b) = b |
| 11 | 19056 | ⟨a, b | aab=b, bbaaaa=a⟩ | φ(a) = a, φ(b) = b |
24 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 9 | 2969 | ⟨a, b | ab=a, baaaa=b⟩ | φ(a) = b, φ(b) = bba |
| 10 | 6351 | ⟨a, b | aab=a, baaaa=b⟩ | φ(a) = b, φ(b) = ba |
| 10 | 8779 | ⟨a, b | ab=a, baaaab=b⟩ | φ(a) = b, φ(b) = bba |
| 10 | 8781 | ⟨a, b | ab=a, baaaba=b⟩ | φ(a) = b, φ(b) = bba |
| 10 | 8785 | ⟨a, b | ab=a, baabaa=b⟩ | φ(a) = b, φ(b) = bba |
| 10 | 8793 | ⟨a, b | ab=a, babaaa=b⟩ | φ(a) = b, φ(b) = bba |
| 10 | 8809 | ⟨a, b | ab=a, bbaaaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 14442 | ⟨a, b | aaab=a, baaaa=b⟩ | φ(a) = b, φ(b) = a |
| 11 | 14570 | ⟨a, b | aaba=a, baaaa=b⟩ | φ(a) = b, φ(b) = a |
| 11 | 24467 | ⟨a, b | ab=a, baaaabb=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24471 | ⟨a, b | ab=a, baaabab=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24473 | ⟨a, b | ab=a, baaabba=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24479 | ⟨a, b | ab=a, baabaab=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24481 | ⟨a, b | ab=a, baababa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24485 | ⟨a, b | ab=a, baabbaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24495 | ⟨a, b | ab=a, babaaab=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24497 | ⟨a, b | ab=a, babaaba=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24501 | ⟨a, b | ab=a, bababaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24509 | ⟨a, b | ab=a, babbaaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24527 | ⟨a, b | ab=a, bbaaaab=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24529 | ⟨a, b | ab=a, bbaaaba=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24533 | ⟨a, b | ab=a, bbaabaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24541 | ⟨a, b | ab=a, bbabaaa=b⟩ | φ(a) = b, φ(b) = bba |
| 11 | 24557 | ⟨a, b | ab=a, bbbaaaa=b⟩ | φ(a) = b, φ(b) = bba |