Certificate for #9153 ⟨a, b | aa=a, abba=abb⟩

Completion settings:

• Auxiliary generators:
  1. c = ab
• Reduction order:
  • Left-to-right shortlex with a < c < b

Axiom: aa=a.

Defines rule #1.

Referenced by [6].

Axiom: abba=abb.

Referenced by [4].

Axiom: ab=c.

Defines rule #3.

Referenced by [4], [5], [6], [7].

Simplify [2] abba=abb.

Reduce RHS:

Referenced by [5].

Overlap of [4] abba=cb with [3] ab=c:

Critical pair: cba=cb.

Defines rule #4.

Referenced by [7].

Overlap of [1] aa=a with [3] ab=c:

Critical pair: ac=ab.

Reduce RHS:

Defines rule #2.

Overlap of [5] cba=cb with [3] ab=c:

Critical pair: cbc=cbb.

Flip LHS and RHS.

Defines rule #5.