| 1 | a | b | a2 | ab | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | a | b | a2 | ab | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 |
| a | a | a2 | ab | a | b | aba | ab2 | ba | b2 | ab2a | ab3 | b2a | b3 |
| b | b | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 | a | b | a2 | ab |
| a2 | a2 | a | b | a2 | ab | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 |
| ab | ab | aba | ab2 | ba | b2 | ab2a | ab3 | b2a | b3 | a2 | ab | a | b |
| ba | ba | aba | ab2 | ba | b2 | ab2a | ab3 | b2a | b3 | a2 | ab | a | b |
| b2 | b2 | b2a | b3 | ab2a | ab3 | a | b | a2 | ab | ba | b2 | aba | ab2 |
| aba | aba | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 | a | b | a2 | ab |
| ab2 | ab2 | ab2a | ab3 | b2a | b3 | a2 | ab | a | b | aba | ab2 | ba | b2 |
| b2a | b2a | ab2a | ab3 | b2a | b3 | a2 | ab | a | b | aba | ab2 | ba | b2 |
| b3 | b3 | a | b | a2 | ab | ba | b2 | aba | ab2 | b2a | b3 | ab2a | ab3 |
| ab2a | ab2a | b2a | b3 | ab2a | ab3 | a | b | a2 | ab | ba | b2 | aba | ab2 |
| ab3 | ab3 | a2 | ab | a | b | aba | ab2 | ba | b2 | ab2a | ab3 | b2a | b3 |
| Length: | Presentation: | Description: | Related: |
|---|---|---|---|
| 9 | 〈a, b | aaaa=b, abbb=1〉 | Isomorphic to ℤ13 | 189 isomorphic |
| 9 | 〈a, b | aba=b, baab=a〉 | Finite non-commutative monoid with 13 elements | 4 isomorphic |
| 10 | 〈a, b | aaaa=b, abbb=a〉 | Finite commutative monoid with 13 elements | 10 isomorphic |
| 10 | 〈a, b | aaaa=b, abbb=b〉 | Finite commutative monoid with 13 elements | 6 isomorphic |
| 10 | 〈a, b | aaab=b, abba=a〉 | Finite non-commutative monoid with 13 elements | 2 isomorphic |
| 10 | 〈a, b | aaa=ab, babb=b〉 | Finite non-commutative monoid with 13 elements | 6 isomorphic |
| 10 | 〈a, b | aaa=ab, bba=bb〉 | Finite non-commutative monoid with 13 elements | |
| 10 | 〈a, b | aaa=ab, bbb=ab〉 | Finite non-commutative monoid with 13 elements | 1 isomorphic |
| 10 | 〈a, b | aaa=ab, bbb=ba〉 | Finite non-commutative monoid with 13 elements | |
| 10 | 〈a, b | aaa=bb, aab=ba〉 | Finite non-commutative monoid with 13 elements | |
| 10 | 〈a, b | aaa=b, abbbb=b〉 | Finite commutative monoid with 13 elements | 2 isomorphic |
| 10 | 〈a, b | aab=b, abbba=a〉 | Finite non-commutative monoid with 13 elements | 3 isomorphic |
| 10 | 〈a, b | bb=aa, aaab=ba〉 | Finite non-commutative monoid with 13 elements | 1 isomorphic |
| 11 | 〈a, b | aaab=aa, bbbb=a〉 | Finite commutative monoid with 13 elements | 1 isomorphic |
| 11 | 〈a, b | aaab=ab, bbbb=a〉 | Finite commutative monoid with 13 elements | 3 isomorphic |
| 11 | 〈a, b | aaab=bb, bbbb=a〉 | Finite commutative monoid with 13 elements | 14 isomorphic |
| 11 | 〈a, b | aaab=b, aabba=a〉 | Finite non-commutative monoid with 13 elements | 3 isomorphic |
| 11 | 〈a, b | aaba=b, babbb=a〉 | Finite commutative monoid with 13 elements | 2 isomorphic |
| 11 | 〈a, b | aaa=bb, aabbb=b〉 | Finite commutative monoid with 13 elements | 2 isomorphic |
| 11 | 〈a, b | aaa=ab, abbb=bb〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aaa=bb, abbb=ba〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aaa=bb, babb=ab〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aab=ab, bbbb=aa〉 | Finite non-commutative monoid with 13 elements | 1 isomorphic |
| 11 | 〈a, b | aab=ba, bbbb=aa〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aba=bb, abbb=aa〉 | Finite non-commutative monoid with 13 elements | 1 isomorphic |
| 11 | 〈a, b | aab=ab, bbb=aaa〉 | Finite non-commutative monoid with 13 elements | 1 isomorphic |
| 11 | 〈a, b | aab=ba, bbb=aaa〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aab=a, bbbbbb=a〉 | Finite commutative monoid with 13 elements | 4 isomorphic |
| 11 | 〈a, b | aab=a, baaa=bbb〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | aab=a, bbbb=bba〉 | Finite non-commutative monoid with 13 elements | |
| 11 | 〈a, b | ab=aa, aaaa=bbb〉 | Finite non-commutative monoid with 13 elements | 7 isomorphic |
| 11 | 〈a, b | ab=aa, baaa=bbb〉 | Finite non-commutative monoid with 13 elements | 3 isomorphic |
| 11 | 〈a, b | ab=a, baaaaaa=b〉 | Finite non-commutative monoid with 13 elements |
| Length: | Presentation: |
|---|---|
| 11 | 〈a, b | aab=b, abbaba=a〉 |
| 11 | 〈a, b | aab=b, bababa=a〉 |
| 11 | 〈a, b | aab=b, babbaa=a〉 |
| 11 | 〈a, b | aab=b, bbabaa=a〉 |