#19522 ⟨a, b | aab=b, aabaa=ba⟩
Contents
- Properties
- Rewriting system
- Isomorphic instances
- Sum of relation sides is 11
- Infinite non-cancellative non-commutative monoid
- Element a has infinite order
- Not left cancellative, because left multiplication by b is not injective:
-
b ⋅ a2 = ba and b ⋅ a = ba, however a2 ≠ a
- Not right cancellative, because right multiplication by b is not injective:
-
a2 ⋅ b = b and 1 ⋅ b = b, however a2 ≠ 1
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:aab=b,aabaa=ba ab - -
aab=b
baa=ba
bab=bb
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
2 total
| Σ | # | Presentation | Mapping |
| 11 | 20068 | ⟨a, b | aab=b, aaba=baa⟩ | φ(a) = a, φ(b) = b |
| 11 | 20082 | ⟨a, b | aab=b, abaa=aba⟩ | φ(a) = a, φ(b) = b |