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# ab:aaa=a,abbb=b b/a bbbbb=b ab=bbb aaa=a
| 1 | a | b | a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | a | b | a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 |
| a | a | a2 | b3 | a | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b2a2 |
| b | b | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | ba2 |
| a2 | a2 | a | b | a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 |
| ba | ba | ba2 | b4 | ba | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b3a2 |
| b2 | b2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b2a2 |
| ba2 | ba2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | ba2 |
| b2a | b2a | b2a2 | b | b2a | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 |
| b3 | b3 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b3a2 |
| b2a2 | b2a2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b2a2 |
| b3a | b3a | b3a2 | b2 | b3a | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | ba2 |
| b4 | b4 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 |
| b3a2 | b3a2 | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b3a2 |
| b4a | b4a | b4a2 | b3 | b4a | b3a | b4 | b3a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b2a2 |
| b4a2 | b4a2 | b4a | b | b4a2 | ba | b2 | ba2 | b2a | b3 | b2a2 | b3a | b4 | b3a2 | b4a | b4a2 |
| Σ | # | Presentation | Description | Related |
|---|---|---|---|---|
| 9 | 1602 | ⟨a, b | aaa=bb, aba=a⟩ | Finite non-commutative monoid with 15 elements | 2 iso |
| 9 | 1603 | ⟨a, b | aaa=bb, aba=b⟩ | Finite non-commutative monoid with 15 elements | 1 iso |
| 9 | 1751 | ⟨a, b | aaab=1, bbbbb=1⟩ | Isomorphic to ℤ15 | 138 iso |
| 10 | 5342 | ⟨a, b | aaa=bb, aba=aa⟩ | Finite non-commutative monoid with 15 elements | 1 iso |
| 10 | 5344 | ⟨a, b | aaa=bb, aba=bb⟩ | Finite non-commutative monoid with 15 elements | 2 iso |
| 10 | 6276 | ⟨a, b | aaa=a, bbbbb=a⟩ | Isomorphic to ℕ(15 = 5) | |
| 10 | 6316 | ⟨a, b | aaa=b, bbbbb=a⟩ | Isomorphic to ℕ(15 = 1) | |
| 10 | 6317 | ⟨a, b | aaa=b, bbbbb=b⟩ | Isomorphic to ℕ(15 = 3) | |
| 11 | 12981 | ⟨a, b | abb=aaa, baaa=b⟩ | Finite non-commutative monoid with 15 elements | 3 iso |
| 11 | 12985 | ⟨a, b | abb=aaa, baba=b⟩ | Finite non-commutative monoid with 15 elements | 7 iso |
| 11 | 13123 | ⟨a, b | aab=aaa, aba=bb⟩ | Finite non-commutative monoid with 15 elements | |
| 11 | 13191 | ⟨a, b | abb=aaa, bbb=ab⟩ | Finite non-commutative monoid with 15 elements | 1 iso |
| 11 | 13192 | ⟨a, b | abb=aaa, bbb=ba⟩ | Finite non-commutative monoid with 15 elements | |
| 11 | 15439 | ⟨a, b | aaa=aa, bbbbb=a⟩ | Isomorphic to ℕ(15 = 10) | |
| 11 | 15503 | ⟨a, b | aaa=ab, bbbbb=a⟩ | Isomorphic to ℕ(15 = 6) | 1 iso |
| 11 | 15543 | ⟨a, b | aaa=bb, bbbbb=a⟩ | Isomorphic to ℕ(15 = 2) | 1 iso |
| 11 | 16041 | ⟨a, b | aaa=ab, bbbb=aa⟩ | Finite non-commutative monoid with 15 elements | |
| 11 | 16142 | ⟨a, b | aab=aa, bbbb=ab⟩ | Finite non-commutative monoid with 15 elements | |
| 11 | 19374 | ⟨a, b | aaa=b, bbbbb=ab⟩ | Isomorphic to ℕ(15 = 4) | |
| 11 | 19502 | ⟨a, b | aab=a, bbbbb=ba⟩ | Finite non-commutative monoid with 15 elements | 1 anti-iso |
| 11 | 20144 | ⟨a, b | aab=b, bbaa=aaa⟩ | Finite non-commutative monoid with 15 elements | |
| 11 | 20819 | ⟨a, b | ab=aa, bbaaa=bb⟩ | Finite non-commutative monoid with 15 elements | 6 iso |
4 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 11 | 18703 | ⟨a, b | aaa=a, aaabbb=b⟩ | φ(a) = a, φ(b) = b |
| 11 | 18723 | ⟨a, b | aaa=a, abaabb=b⟩ | φ(a) = a, φ(b) = b |
| 11 | 18725 | ⟨a, b | aaa=a, ababab=b⟩ | φ(a) = a, φ(b) = b |
| 11 | 18731 | ⟨a, b | aaa=a, abbaab=b⟩ | φ(a) = a, φ(b) = b |