| Up: | Monoids with two generators and two relations |
|---|---|
| Prev: | #14366 ⟨a, b | aaaa=a, bbabb=b⟩ |
| Next: | #14368 ⟨a, b | aaaa=a, bbbbb=b⟩ |
# ab:aaaa=a,bbbbb=a b/a bbbbbbbbbbbbbbbbbbbb=bbbbb a=bbbbb
| 1 | b | b2 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | b | b2 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 |
| b | b | b2 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 |
| b2 | b2 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 |
| b3 | b3 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 |
| b4 | b4 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 |
| b5 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 |
| b6 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 |
| b7 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 |
| b8 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 |
| b9 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 |
| b10 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 |
| b11 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 |
| b12 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 |
| b13 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 |
| b14 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 |
| b15 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 |
| b16 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 |
| b17 | b17 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 |
| b18 | b18 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 |
| b19 | b19 | b5 | b6 | b7 | b8 | b9 | b10 | b11 | b12 | b13 | b14 | b15 | b16 | b17 | b18 | b19 | b5 | b6 | b7 | b8 |
| Σ | # | Presentation | Description | Related |
|---|---|---|---|---|
| 8 | 526 | ⟨a, b | aab=a, bbbb=1⟩ | Finite non-commutative monoid with 20 elements | 10 iso, 9 anti-iso |
| 9 | 2207 | ⟨a, b | ab=aa, bbbb=b⟩ | Finite non-commutative monoid with 20 elements | 1 anti-iso |
| 10 | 4095 | ⟨a, b | baa=abb, abab=1⟩ | Finite non-Abelian group with 20 elements | 4 iso, 1 anti-iso |
| 10 | 4212 | ⟨a, b | aaaaa=1, abbbb=1⟩ | Isomorphic to ℤ20 | 16 iso |
| 10 | 5349 | ⟨a, b | aaa=bb, bab=aa⟩ | Finite non-commutative monoid with 20 elements | 1 iso |
| 10 | 6728 | ⟨a, b | aba=a, aaaa=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 10 | 6764 | ⟨a, b | aba=b, aaaa=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 10 | 7117 | ⟨a, b | ab=aa, bbbb=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 12159 | ⟨a, b | aaaa=aa, abbb=b⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 12322 | ⟨a, b | aaab=bb, bbba=a⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 14407 | ⟨a, b | aaaa=b, bbbbb=a⟩ | Isomorphic to ℕ(20 = 1) | |
| 11 | 14408 | ⟨a, b | aaaa=b, bbbbb=b⟩ | Isomorphic to ℕ(20 = 4) | |
| 11 | 15933 | ⟨a, b | aba=bb, baaab=a⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 16124 | ⟨a, b | aab=aa, baba=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 16339 | ⟨a, b | aba=aa, aaaa=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 16343 | ⟨a, b | aba=aa, aaab=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 16545 | ⟨a, b | aba=bb, abb=aaa⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 18619 | ⟨a, b | aba=b, aaaaabb=1⟩ | Finite non-Abelian group with 20 elements | 3 iso |
| 11 | 19503 | ⟨a, b | aab=a, bbbbb=bb⟩ | Finite non-commutative monoid with 20 elements | |
| 11 | 21047 | ⟨a, b | ab=aa, bbbb=bbb⟩ | Finite non-commutative monoid with 20 elements |