Certificate for #20926 ⟨a, b | ab=aa, aaaa=bba⟩

Completion settings:

• Reduction order:
  • Left-to-right recursive path with deg(a) = 0; deg(b) = 1

Axiom: ab=aa.

Defines rule #2.

Referenced by [3].

Axiom: aaaa=bba.

Flip LHS and RHS.

Defines rule #3.

Referenced by [3].

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

Critical pair: aaaaa=aaba.

Reduce RHS:

Defines rule #1.