Certificate for #642 ⟨a, b | ab=aa, bba=a⟩

Completion settings:

• Reduction order:
  • Left-to-right shortlex with a < b

Axiom: ab=aa.

Defines rule #1.

Referenced by [3].

Axiom: bba=a.

Defines rule #2.

Referenced by [3].

Overlap of [1] ab=aa with [2] bba=a:

Critical pair: aa=aaba.

Reduce RHS:

Flip LHS and RHS.

Defines rule #3.