#20786 ⟨a, b | ab=aa, baaaa=ba⟩
Contents
- Properties
- Rewriting system
- Isomorphic instances
- Sum of relation sides is 11
- Infinite non-cancellative non-commutative monoid
- Element b has infinite order
- Not left cancellative, because left multiplication by a is not injective:
-
a ⋅ b = a2 and a ⋅ a = a2, however b ≠ a
- Not right cancellative, because right multiplication by a is not injective:
-
ba3 ⋅ a = ba and b ⋅ a = ba, however ba3 ≠ b
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:ab=aa,baaaa=ba ab - -
ab=aa
baaaa=ba
aaaaaa=aaa
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
7 total
| Σ | # | Presentation | Mapping |
| 11 | 20790 | ⟨a, b | ab=aa, baaab=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20794 | ⟨a, b | ab=aa, baaba=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20798 | ⟨a, b | ab=aa, baabb=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20802 | ⟨a, b | ab=aa, babaa=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20806 | ⟨a, b | ab=aa, babab=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20810 | ⟨a, b | ab=aa, babba=ba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20814 | ⟨a, b | ab=aa, babbb=ba⟩ | φ(a) = a, φ(b) = b |