#21016 ⟨a, b | ab=aa, bbaa=aaa⟩
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:
-
b2a ⋅ a = a3 and a2 ⋅ a = a3, however b2a ≠ a2
- Reduction order:
- Left-to-right shortlex with a < b
- Certificate: derivations of all rewriting rules from the defining relations.
# ab:ab=aa,bbaa=aaa ab - -
ab=aa
bbaa=aaa
aaaaa=aaaa
The mapping is from the listed presentation's alphabet to the current rewriting system's alphabet.
7 total
| Σ | # | Presentation | Mapping |
| 11 | 21017 | ⟨a, b | ab=aa, bbaa=aab⟩ | φ(a) = a, φ(b) = b |
| 11 | 21018 | ⟨a, b | ab=aa, bbaa=aba⟩ | φ(a) = a, φ(b) = b |
| 11 | 21019 | ⟨a, b | ab=aa, bbaa=abb⟩ | φ(a) = a, φ(b) = b |
| 11 | 21024 | ⟨a, b | ab=aa, bbab=aaa⟩ | φ(a) = a, φ(b) = b |
| 11 | 21025 | ⟨a, b | ab=aa, bbab=aab⟩ | φ(a) = a, φ(b) = b |
| 11 | 21026 | ⟨a, b | ab=aa, bbab=aba⟩ | φ(a) = a, φ(b) = b |
| 11 | 21027 | ⟨a, b | ab=aa, bbab=abb⟩ | φ(a) = a, φ(b) = b |