#5736 ⟨a, b | aaab=1, aaaab=a⟩
Contents
- Properties
- Rewriting system
- Isomorphic instances
- Sum of relation sides is 10
- Infinite non-cancellative non-commutative monoid
- Element a has infinite order
- Not left cancellative, because left multiplication by a is not injective:
-
a ⋅ a2ba = a and a ⋅ 1 = a, however a2ba ≠ 1
- Not right cancellative, because right multiplication by a2b is not injective:
-
a2ba ⋅ a2b = a2b and 1 ⋅ a2b = a2b, however a2ba ≠ 1
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
| # | Rule | Proof |
| 1. |
a3b ⇒ 1 |
[1] |
# ab:aaab=1,aaaab=a ab - -
aaab=1
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
3 total
| Σ | # | Presentation | Mapping |
| 10 | 5738 | ⟨a, b | aaab=1, aaaba=a⟩ | φ(a) = a, φ(b) = b |
| 10 | 5741 | ⟨a, b | aaab=1, aaabb=b⟩ | φ(a) = a, φ(b) = b |
| 10 | 5769 | ⟨a, b | aaab=1, baaab=b⟩ | φ(a) = a, φ(b) = b |