#20816 ⟨a, b | ab=aa, bbaaa=aa⟩
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:
-
a4 ⋅ a = a2 and a ⋅ a = a2, however a4 ≠ a
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:ab=aa,bbaaa=aa ab - -
ab=aa
bbaa=aaaa
aaaaa=aa
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
7 total
| Σ | # | Presentation | Mapping |
| 11 | 20817 | ⟨a, b | ab=aa, bbaaa=ab⟩ | φ(a) = a, φ(b) = b |
| 11 | 20820 | ⟨a, b | ab=aa, bbaab=aa⟩ | φ(a) = a, φ(b) = b |
| 11 | 20821 | ⟨a, b | ab=aa, bbaab=ab⟩ | φ(a) = a, φ(b) = b |
| 11 | 20824 | ⟨a, b | ab=aa, bbaba=aa⟩ | φ(a) = a, φ(b) = b |
| 11 | 20825 | ⟨a, b | ab=aa, bbaba=ab⟩ | φ(a) = a, φ(b) = b |
| 11 | 20828 | ⟨a, b | ab=aa, bbabb=aa⟩ | φ(a) = a, φ(b) = b |
| 11 | 20829 | ⟨a, b | ab=aa, bbabb=ab⟩ | φ(a) = a, φ(b) = b |