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# ab:ab=a,aaa=bb a/b aaaa=a ba=a ab=a bb=aaa
| 1 | a | b | a2 | a3 | |
|---|---|---|---|---|---|
| 1 | 1 | a | b | a2 | a3 |
| a | a | a2 | a | a3 | a |
| b | b | a | a3 | a2 | a3 |
| a2 | a2 | a3 | a2 | a | a2 |
| a3 | a3 | a | a3 | a2 | a3 |
| Σ | # | Presentation | Description | Related |
|---|---|---|---|---|
| 6 | 44 | ⟨a, b | aa=b, abb=1⟩ | Isomorphic to ℤ5 | 1132 iso |
| 7 | 253 | ⟨a, b | aa=b, abb=a⟩ | Isomorphic to ℕ(5 = 1) | 71 iso |
| 7 | 254 | ⟨a, b | aa=b, abb=b⟩ | Isomorphic to ℕ(5 = 2) | 43 iso |
| 7 | 268 | ⟨a, b | ab=a, baa=b⟩ | Finite non-commutative monoid with 5 elements | 63 iso, 23 anti-iso |
| 8 | 574 | ⟨a, b | aaa=b, aab=b⟩ | Isomorphic to ℕ(5 = 3) | 27 iso |
| 8 | 950 | ⟨a, b | ab=a, bbbb=a⟩ | Isomorphic to ℕ(5 = 4) | 32 iso |
| 8 | 1019 | ⟨a, b | ab=a, bba=bb⟩ | Finite non-commutative monoid with 5 elements | 25 iso |
| 8 | 1020 | ⟨a, b | ab=a, bbb=aa⟩ | Finite commutative monoid with 5 elements | 9 iso |
| 8 | 1022 | ⟨a, b | ab=a, bbb=ba⟩ | Finite non-commutative monoid with 5 elements | 4 iso |
| 10 | 8617 | ⟨a, b | aa=a, abbbba=b⟩ | Finite commutative monoid with 5 elements | 3 iso |
| 11 | 15426 | ⟨a, b | aaa=aa, abbba=b⟩ | Finite commutative monoid with 5 elements |
19 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 9 | 3079 | ⟨a, b | ab=a, aaab=bb⟩ | φ(a) = a, φ(b) = b |
| 9 | 3083 | ⟨a, b | ab=a, aaba=bb⟩ | φ(a) = a, φ(b) = b |
| 9 | 3091 | ⟨a, b | ab=a, abaa=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 8999 | ⟨a, b | ab=a, aaabb=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 9007 | ⟨a, b | ab=a, aabab=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 9011 | ⟨a, b | ab=a, aabba=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 9023 | ⟨a, b | ab=a, abaab=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 9027 | ⟨a, b | ab=a, ababa=bb⟩ | φ(a) = a, φ(b) = b |
| 10 | 9035 | ⟨a, b | ab=a, abbaa=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24891 | ⟨a, b | ab=a, aaabbb=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24907 | ⟨a, b | ab=a, aababb=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24915 | ⟨a, b | ab=a, aabbab=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24919 | ⟨a, b | ab=a, aabbba=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24939 | ⟨a, b | ab=a, abaabb=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24947 | ⟨a, b | ab=a, ababab=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24951 | ⟨a, b | ab=a, ababba=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24963 | ⟨a, b | ab=a, abbaab=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24967 | ⟨a, b | ab=a, abbaba=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 24975 | ⟨a, b | ab=a, abbbaa=bb⟩ | φ(a) = a, φ(b) = b |