#20295 ⟨a, b | aba=b, abbb=abb⟩
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 a is not injective:
-
a ⋅ b3 = ab2 and a ⋅ b2 = ab2, however b3 ≠ b2
- Not right cancellative, because right multiplication by b is not injective:
-
a2b ⋅ b = b3 and b2 ⋅ b = b3, however a2b ≠ b2
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:aba=b,abbb=abb ab - -
aba=b
bba=abb
aabb=bbb
abbb=abb
babb=abb
bbbb=bbb
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
3 total
| Σ | # | Presentation | Mapping |
| 11 | 20298 | ⟨a, b | aba=b, abbb=bba⟩ | φ(a) = a, φ(b) = b |
| 11 | 20309 | ⟨a, b | aba=b, babb=abb⟩ | φ(a) = a, φ(b) = b |
| 11 | 20312 | ⟨a, b | aba=b, babb=bba⟩ | φ(a) = a, φ(b) = b |