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# ab:aa=b,abb=b a/b aaaaa=aa b=aa
| 1 | a | a2 | a3 | a4 | |
|---|---|---|---|---|---|
| 1 | 1 | a | a2 | a3 | a4 |
| a | a | a2 | a3 | a4 | a2 |
| a2 | a2 | a3 | a4 | a2 | a3 |
| a3 | a3 | a4 | a2 | a3 | a4 |
| a4 | a4 | a2 | a3 | a4 | a2 |
| 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 | 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 | 995 | ⟨a, b | ab=a, aaa=bb⟩ | Finite commutative monoid with 5 elements | 19 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 |
43 total
| Σ | # | Presentation | Mapping |
|---|---|---|---|
| 7 | 256 | ⟨a, b | aa=b, bab=b⟩ | φ(a) = a, φ(b) = aa |
| 8 | 903 | ⟨a, b | aa=b, aaab=b⟩ | φ(a) = a, φ(b) = aa |
| 8 | 905 | ⟨a, b | aa=b, aaba=b⟩ | φ(a) = a, φ(b) = aa |
| 8 | 982 | ⟨a, b | aa=b, abb=aa⟩ | φ(a) = a, φ(b) = aa |
| 8 | 986 | ⟨a, b | aa=b, bab=aa⟩ | φ(a) = a, φ(b) = aa |
| 9 | 1680 | ⟨a, b | aba=bb, baa=a⟩ | φ(a) = aa, φ(b) = a |
| 9 | 1692 | ⟨a, b | abb=bb, bbb=a⟩ | φ(a) = aaa, φ(b) = a |
| 9 | 1698 | ⟨a, b | bab=bb, bbb=a⟩ | φ(a) = aaa, φ(b) = a |
| 9 | 2177 | ⟨a, b | ab=aa, aaaa=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2179 | ⟨a, b | ab=aa, aaab=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2181 | ⟨a, b | ab=aa, aaba=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2183 | ⟨a, b | ab=aa, aabb=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2185 | ⟨a, b | ab=aa, abaa=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2187 | ⟨a, b | ab=aa, abab=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2189 | ⟨a, b | ab=aa, abba=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2191 | ⟨a, b | ab=aa, abbb=b⟩ | φ(a) = a, φ(b) = aaaa |
| 9 | 2897 | ⟨a, b | aa=b, aaaaa=b⟩ | φ(a) = a, φ(b) = aa |
| 9 | 3039 | ⟨a, b | aa=b, aaab=aa⟩ | φ(a) = a, φ(b) = aa |
| 9 | 3043 | ⟨a, b | aa=b, aaba=aa⟩ | φ(a) = a, φ(b) = aa |
| 10 | 5097 | ⟨a, b | aab=aa, aaab=b⟩ | φ(a) = a, φ(b) = aaa |
| 10 | 5099 | ⟨a, b | aab=aa, aaba=b⟩ | φ(a) = a, φ(b) = aaa |
| 10 | 5103 | ⟨a, b | aab=aa, abaa=b⟩ | φ(a) = a, φ(b) = aaa |
| 10 | 5227 | ⟨a, b | aba=aa, aaba=b⟩ | φ(a) = a, φ(b) = aaa |
| 10 | 8912 | ⟨a, b | aa=b, aaaaa=aa⟩ | φ(a) = a, φ(b) = aa |
| 11 | 12215 | ⟨a, b | aaab=aa, aaba=b⟩ | φ(a) = a, φ(b) = aa |
| 11 | 12219 | ⟨a, b | aaab=aa, abaa=b⟩ | φ(a) = a, φ(b) = aa |
| 11 | 12329 | ⟨a, b | aaba=aa, abaa=b⟩ | φ(a) = a, φ(b) = aa |
| 11 | 15552 | ⟨a, b | aab=aa, aaabb=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15556 | ⟨a, b | aab=aa, aabab=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15558 | ⟨a, b | aab=aa, aabba=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15564 | ⟨a, b | aab=aa, abaab=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15566 | ⟨a, b | aab=aa, ababa=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15570 | ⟨a, b | aab=aa, abbaa=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15814 | ⟨a, b | aba=aa, aabba=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 15820 | ⟨a, b | aba=aa, ababa=b⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 19304 | ⟨a, b | aaa=b, aaaaa=aa⟩ | φ(a) = a, φ(b) = aaa |
| 11 | 19391 | ⟨a, b | aab=a, aaabb=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19399 | ⟨a, b | aab=a, aabab=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19403 | ⟨a, b | aab=a, aabba=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19415 | ⟨a, b | aab=a, abaab=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19419 | ⟨a, b | aab=a, ababa=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19427 | ⟨a, b | aab=a, abbaa=bb⟩ | φ(a) = aa, φ(b) = a |
| 11 | 19668 | ⟨a, b | aba=a, ababa=bb⟩ | φ(a) = aa, φ(b) = a |