〈a, b | abbaabba=bb〉

Properties

• Infinite non-commutative monoid

Completion parameters

• Reduction order: left-to-right ac/b
• Auxiliary generator bba=c

Complete rewriting system

1. c²a ⇒ ac²
2. a(ca)² ⇒ c
3. c²b ⇒ acb(ac)²
4. (ac)²b ⇒ b(ac)²
5. b² ⇒ (ac)²