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# ab:aaa=ab,bab=b a/b aaaaaa=aaa baaa=b ab=aaa bb=baa
| 1 | a | b | a2 | ba | a3 | ba2 | a4 | a5 | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | a | b | a2 | ba | a3 | ba2 | a4 | a5 |
| a | a | a2 | a3 | a3 | a4 | a4 | a5 | a5 | a3 |
| b | b | ba | ba2 | ba2 | b | b | ba | ba | ba2 |
| a2 | a2 | a3 | a4 | a4 | a5 | a5 | a3 | a3 | a4 |
| ba | ba | ba2 | b | b | ba | ba | ba2 | ba2 | b |
| a3 | a3 | a4 | a5 | a5 | a3 | a3 | a4 | a4 | a5 |
| ba2 | ba2 | b | ba | ba | ba2 | ba2 | b | b | ba |
| a4 | a4 | a5 | a3 | a3 | a4 | a4 | a5 | a5 | a3 |
| a5 | a5 | a3 | a4 | a4 | a5 | a5 | a3 | a3 | a4 |
| 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 | 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 | 2064 | ⟨a, b | aab=b, abba=a⟩ | Finite non-commutative monoid with 9 elements | 14 iso, 24 anti-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 |
4 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 9 | 1597 | ⟨a, b | aaa=ab, bba=b⟩ | φ(a) = a, φ(b) = b |
| 10 | 5059 | ⟨a, b | aaa=ab, baaa=b⟩ | φ(a) = a, φ(b) = b |
| 11 | 19999 | ⟨a, b | aab=a, baab=bbb⟩ | φ(a) = b, φ(b) = a |
| 11 | 20007 | ⟨a, b | aab=a, baba=bbb⟩ | φ(a) = b, φ(b) = a |
5 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 11 | 12915 | ⟨a, b | aba=aaa, aaab=b⟩ | φ(a) = a, φ(b) = baa |
| 11 | 12919 | ⟨a, b | aba=aaa, aabb=b⟩ | φ(a) = a, φ(b) = baa |
| 11 | 12921 | ⟨a, b | aba=aaa, abab=b⟩ | φ(a) = a, φ(b) = baa |
| 11 | 12925 | ⟨a, b | aba=aaa, abbb=b⟩ | φ(a) = a, φ(b) = baa |
| 11 | 20213 | ⟨a, b | aba=a, abab=bbb⟩ | φ(a) = b, φ(b) = a |