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# ab:aab=bb,baa=a a/b aaaa=a ba=aaa bb=aab
| 1 | a | b | a2 | ab | a3 | a2b | a3b | |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | a | b | a2 | ab | a3 | a2b | a3b |
| a | a | a2 | ab | a3 | a2b | a | a3b | ab |
| b | b | a3 | a2b | a | a3b | a2 | ab | a2b |
| a2 | a2 | a3 | a2b | a | a3b | a2 | ab | a2b |
| ab | ab | a | a3b | a2 | ab | a3 | a2b | a3b |
| a3 | a3 | a | a3b | a2 | ab | a3 | a2b | a3b |
| a2b | a2b | a2 | ab | a3 | a2b | a | a3b | ab |
| a3b | a3b | a3 | a2b | a | a3b | a2 | ab | a2b |
| Σ | # | Presentation | Description | Related |
|---|---|---|---|---|
| 7 | 188 | ⟨a, b | aab=1, bbbb=1⟩ | Isomorphic to ℤ8 | 727 iso |
| 7 | 330 | ⟨a, b | aa=1, abba=b⟩ | Finite non-commutative monoid with 8 elements | 60 iso |
| 8 | 556 | ⟨a, b | aba=b, aabb=1⟩ | Finite non-Abelian group with 8 elements | 28 iso |
| 8 | 898 | ⟨a, b | aa=a, bbbb=a⟩ | Isomorphic to ℕ(8 = 4) | 48 iso |
| 8 | 918 | ⟨a, b | aa=b, bbbb=a⟩ | Isomorphic to ℕ(8 = 1) | 34 iso |
| 8 | 919 | ⟨a, b | aa=b, bbbb=b⟩ | Isomorphic to ℕ(8 = 2) | 46 iso |
| 8 | 961 | ⟨a, b | aa=a, aba=bb⟩ | Finite non-commutative monoid with 8 elements | 5 iso |
| 9 | 1605 | ⟨a, b | aaa=bb, abb=b⟩ | Isomorphic to ℕ(8 = 3) | 55 iso |
| 9 | 1606 | ⟨a, b | aaa=bb, bab=a⟩ | Finite commutative monoid with 8 elements | 14 iso |
| 9 | 1615 | ⟨a, b | aab=aa, baa=b⟩ | Finite non-commutative monoid with 8 elements | 9 iso, 5 anti-iso |
| 9 | 2206 | ⟨a, b | ab=aa, bbbb=a⟩ | Isomorphic to ℕ(8 = 5) | 32 iso |
| 9 | 2220 | ⟨a, b | bb=aa, aaab=a⟩ | Finite commutative monoid with 8 elements | 22 iso |
| 9 | 2247 | ⟨a, b | ab=aa, baa=bb⟩ | Finite non-commutative monoid with 8 elements | 1 iso |
| 9 | 2256 | ⟨a, b | ab=aa, bbb=aa⟩ | Finite non-commutative monoid with 8 elements | 1 iso |
| 9 | 2258 | ⟨a, b | ab=aa, bbb=ba⟩ | Finite non-commutative monoid with 8 elements | |
| 9 | 2883 | ⟨a, b | aa=a, abbbb=b⟩ | Finite non-commutative monoid with 8 elements | 14 iso |
| 9 | 3107 | ⟨a, b | ab=a, baaa=bb⟩ | Finite non-commutative monoid with 8 elements | 9 iso |
| 9 | 3123 | ⟨a, b | ab=a, bbaa=bb⟩ | Finite non-commutative monoid with 8 elements | 10 iso |
| 10 | 5191 | ⟨a, b | aab=bb, aaaa=b⟩ | Isomorphic to ℕ(8 = 6) | 18 iso |
| 10 | 6664 | ⟨a, b | aab=b, aaaa=ba⟩ | Finite non-commutative monoid with 8 elements | 1 iso |
| 10 | 7057 | ⟨a, b | ab=aa, aaaa=bb⟩ | Finite non-commutative monoid with 8 elements | 7 iso |
| 10 | 9380 | ⟨a, b | ab=a, bbbb=baa⟩ | Finite non-commutative monoid with 8 elements | 2 iso |
| 11 | 12606 | ⟨a, b | abbb=aa, bbbb=a⟩ | Isomorphic to ℕ(8 = 7) | 14 iso |
| 11 | 20047 | ⟨a, b | aab=a, bbbb=bbb⟩ | Finite non-commutative monoid with 8 elements | |
| 11 | 20051 | ⟨a, b | aab=b, aaaa=abb⟩ | Finite commutative monoid with 8 elements | 1 iso |
| 11 | 24863 | ⟨a, b | ab=a, aaaaaa=bb⟩ | Finite commutative monoid with 8 elements | |
| 11 | 25112 | ⟨a, b | ab=a, bbbbbb=aa⟩ | Finite commutative monoid with 8 elements | |
| 11 | 25114 | ⟨a, b | ab=a, bbbbbb=ba⟩ | Finite non-commutative monoid with 8 elements | |
| 11 | 25411 | ⟨a, b | ab=a, aaaaa=bbb⟩ | Finite commutative monoid with 8 elements | |
| 11 | 25652 | ⟨a, b | ab=a, bbbbb=aaa⟩ | Finite commutative monoid with 8 elements | |
| 11 | 25658 | ⟨a, b | ab=a, bbbbb=bba⟩ | Finite non-commutative monoid with 8 elements | |
| 11 | 25897 | ⟨a, b | ab=a, bbbb=aaaa⟩ | Finite commutative monoid with 8 elements | |
| 11 | 25911 | ⟨a, b | ab=a, bbbb=bbba⟩ | Finite non-commutative monoid with 8 elements |
4 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 10 | 5225 | ⟨a, b | aba=aa, aaab=b⟩ | φ(a) = b, φ(b) = aaa |
| 11 | 15808 | ⟨a, b | aba=aa, aaabb=b⟩ | φ(a) = b, φ(b) = aaa |
| 11 | 15812 | ⟨a, b | aba=aa, aabab=b⟩ | φ(a) = b, φ(b) = aaa |
| 11 | 15818 | ⟨a, b | aba=aa, abaab=b⟩ | φ(a) = b, φ(b) = aaa |
11 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 9 | 2193 | ⟨a, b | ab=aa, baaa=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2195 | ⟨a, b | ab=aa, baab=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2197 | ⟨a, b | ab=aa, baba=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2199 | ⟨a, b | ab=aa, babb=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2201 | ⟨a, b | ab=aa, bbaa=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2203 | ⟨a, b | ab=aa, bbab=b⟩ | φ(a) = b, φ(b) = aa |
| 9 | 2205 | ⟨a, b | ab=aa, bbba=b⟩ | φ(a) = b, φ(b) = aa |
| 11 | 12491 | ⟨a, b | abaa=aa, baaa=b⟩ | φ(a) = b, φ(b) = a |
| 11 | 19447 | ⟨a, b | aab=a, baaab=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 19451 | ⟨a, b | aab=a, baaba=bb⟩ | φ(a) = a, φ(b) = b |
| 11 | 19459 | ⟨a, b | aab=a, babaa=bb⟩ | φ(a) = a, φ(b) = b |