#257 ⟨a, b | aa=b, bbb=a⟩
Contents
- Properties
- Commutative structure
- Finite structure
- Staircase diagram
- Cayley table
- Right Cayley graph
- Rewriting system
- Same cardinality
- Isomorphic instances
- Sum of relation sides is 7
- Isomorphic to ℕ(6 = 1)
- Finite commutative monoid with 6 elements
- Not cancellative, because multiplication by a is not injective:
-
a ⋅ a5 = a and a ⋅ 1 = a, however a5 ≠ 1
- Gröbner basis: ⟨a, b | b6=b, a=b3⟩
- Cancellative quotient is isomorphic to ℤ5
- Enveloping group is isomorphic to ℤ5
- Group of units is isomorphic to ℤ1
- 2 Archimedian components:
An idempotent element x satisfies x2 = x.
The index and period of x is the least m (index) and n (period) such that x(m+n) = xm.
- 1 non-trivial idempotent:
- Order of generators:
- a: index 1, period 5
- b: index 1, period 5
- Histogram:
| index 1, period 1 | 1 element | a5 |
| index 1, period 5 | 4 elements | a, a2, a3, a4 |
Idempotents are shown in bold.
|
1 | a | a2 | a3 | a4 | a5 |
| 1 | 1 | a | a2 | a3 | a4 | a5 |
| a | a | a2 | a3 | a4 | a5 | a |
| a2 | a2 | a3 | a4 | a5 | a | a2 |
| a3 | a3 | a4 | a5 | a | a2 | a3 |
| a4 | a4 | a5 | a | a2 | a3 | a4 |
| a5 | a5 | a | a2 | a3 | a4 | a5 |
Idempotents are shown in bold.
- Reduction order:
- Left-to-right recursive path with deg(a) = 0; deg(b) = 1
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:aa=b,bbb=a a/b - -
aaaaaa=a
b=aa
19 unique, 1864 total
| Σ | # | Presentation | Properties | Description | φ |
| 6 | 22 | ⟨a, b | ab=aa, bb=1⟩ | Noc 6 | | 107 |
| 6 | 26 | ⟨a, b | aaa=1, abb=1⟩ | Grp Com 6 | ℤ6 | 1373 |
| 7 | 160 | ⟨a, b | ab=aa, bb=b⟩ | Noc 6 | | 4 |
| 7 | 245 | ⟨a, b | aa=a, bbb=a⟩ | Noc Com 6 | ℕ(6 = 3) | 49 |
| 7 | 258 | ⟨a, b | aa=b, bbb=b⟩ | Noc Com 6 | ℕ(6 = 2) | 55 |
| 8 | 639 | ⟨a, b | ab=aa, baa=b⟩ | Noc 6 | | 13 |
| 8 | 644 | ⟨a, b | ab=aa, bbb=a⟩ | Noc Com 6 | ℕ(6 = 4) | 46 |
| 8 | 893 | ⟨a, b | aa=a, abbb=b⟩ | Noc 6 | | 19 |
| 8 | 1011 | ⟨a, b | ab=a, baa=bb⟩ | Noc 6 | | 13 |
| 9 | 1427 | ⟨a, b | abba=b, baba=1⟩ | Grp 6 | | 66 |
| 9 | 1581 | ⟨a, b | aaa=aa, abb=b⟩ | Noc 6 | | 5 |
| 9 | 1648 | ⟨a, b | aab=bb, abb=a⟩ | Noc Com 6 | | 13 |
| 9 | 1686 | ⟨a, b | abb=aa, bbb=a⟩ | Noc Com 6 | ℕ(6 = 5) | 49 |
| 9 | 3075 | ⟨a, b | ab=a, aaaa=bb⟩ | Noc Com 6 | | 14 |
| 9 | 3132 | ⟨a, b | ab=a, bbbb=aa⟩ | Noc Com 6 | | 5 |
| 9 | 3134 | ⟨a, b | ab=a, bbbb=ba⟩ | Noc 6 | | 2 |
| 9 | 3193 | ⟨a, b | ab=a, bbb=aaa⟩ | Noc Com 6 | | 9 |
| 9 | 3199 | ⟨a, b | ab=a, bbb=bba⟩ | Noc 6 | | 3 |
| 11 | 24145 | ⟨a, b | aa=a, abbbbba=b⟩ | Noc Com 6 | | |
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
61 total
| Σ | # | Presentation | Mapping |
| 8 | 906 | ⟨a, b | aa=b, aabb=a⟩ | φ(a) = bbb, φ(b) = b |
| 8 | 908 | ⟨a, b | aa=b, abab=a⟩ | φ(a) = bbb, φ(b) = b |
| 8 | 910 | ⟨a, b | aa=b, abba=a⟩ | φ(a) = bbb, φ(b) = b |
| 8 | 914 | ⟨a, b | aa=b, baab=a⟩ | φ(a) = bbb, φ(b) = b |
| 9 | 2002 | ⟨a, b | aaa=b, aaab=a⟩ | φ(a) = bb, φ(b) = b |
| 9 | 2004 | ⟨a, b | aaa=b, aaba=a⟩ | φ(a) = bb, φ(b) = b |
| 9 | 2021 | ⟨a, b | aab=a, aaaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 9 | 2085 | ⟨a, b | aba=a, aaaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 9 | 2898 | ⟨a, b | aa=b, aaaab=a⟩ | φ(a) = bbb, φ(b) = b |
| 9 | 2900 | ⟨a, b | aa=b, aaaba=a⟩ | φ(a) = bbb, φ(b) = b |
| 9 | 2904 | ⟨a, b | aa=b, aabaa=a⟩ | φ(a) = bbb, φ(b) = b |
| 9 | 2937 | ⟨a, b | ab=a, aaaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 10 | 8640 | ⟨a, b | aa=b, aaaaaa=a⟩ | φ(a) = bbb, φ(b) = b |
| 10 | 8715 | ⟨a, b | ab=a, aaaaab=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 10 | 8717 | ⟨a, b | ab=a, aaaaba=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 10 | 8721 | ⟨a, b | ab=a, aaabaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 10 | 8729 | ⟨a, b | ab=a, aabaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 10 | 8745 | ⟨a, b | ab=a, abaaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 14440 | ⟨a, b | aaab=a, abbbb=b⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14672 | ⟨a, b | aabb=a, aaabb=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14678 | ⟨a, b | aabb=a, aabba=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14684 | ⟨a, b | aabb=a, abaab=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14686 | ⟨a, b | aabb=a, ababa=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14690 | ⟨a, b | aabb=a, abbaa=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14736 | ⟨a, b | abab=a, aaabb=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14740 | ⟨a, b | abab=a, aabab=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14742 | ⟨a, b | abab=a, aabba=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14748 | ⟨a, b | abab=a, abaab=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14750 | ⟨a, b | abab=a, ababa=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14754 | ⟨a, b | abab=a, abbaa=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14806 | ⟨a, b | abba=a, aabba=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14812 | ⟨a, b | abba=a, ababa=b⟩ | φ(a) = bbb, φ(b) = b |
| 11 | 14847 | ⟨a, b | abba=b, aabbb=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14853 | ⟨a, b | abba=b, ababb=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14855 | ⟨a, b | abba=b, abbab=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14857 | ⟨a, b | abba=b, abbba=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14863 | ⟨a, b | abba=b, baabb=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 14865 | ⟨a, b | abba=b, babab=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 18760 | ⟨a, b | aaa=b, aaaaaa=a⟩ | φ(a) = bb, φ(b) = b |
| 11 | 18835 | ⟨a, b | aab=a, aaaaab=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 18837 | ⟨a, b | aab=a, aaaaba=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 18841 | ⟨a, b | aab=a, aaabaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 18849 | ⟨a, b | aab=a, aabaaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 18865 | ⟨a, b | aab=a, abaaaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 19093 | ⟨a, b | aba=a, aaaaba=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 19097 | ⟨a, b | aba=a, aaabaa=b⟩ | φ(a) = bbbb, φ(b) = b |
| 11 | 24339 | ⟨a, b | ab=a, aaaaabb=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24343 | ⟨a, b | ab=a, aaaabab=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24345 | ⟨a, b | ab=a, aaaabba=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24351 | ⟨a, b | ab=a, aaabaab=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24353 | ⟨a, b | ab=a, aaababa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24357 | ⟨a, b | ab=a, aaabbaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24367 | ⟨a, b | ab=a, aabaaab=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24369 | ⟨a, b | ab=a, aabaaba=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24373 | ⟨a, b | ab=a, aababaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24381 | ⟨a, b | ab=a, aabbaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24399 | ⟨a, b | ab=a, abaaaab=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24401 | ⟨a, b | ab=a, abaaaba=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24405 | ⟨a, b | ab=a, abaabaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24413 | ⟨a, b | ab=a, ababaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |
| 11 | 24429 | ⟨a, b | ab=a, abbaaaa=b⟩ | φ(a) = b, φ(b) = bbbbb |