Certificate for #5513 ⟨a, b, c | ab=c, abaa=c⟩

Completion settings:

[1] ab=c

Axiom: ab=c.

Defines rule #2.

Referenced by [2], [3].

[2] caa=c

Axiom: abaa=c.

Reduce LHS:

[1](ab)aa
⇒ caa

Defines rule #1.

Referenced by [3].

[3] cb=cac

Overlap of [2] caa=c with [1] ab=c:

ca a ab

Critical pair: cac=cb.

Flip LHS and RHS.

Defines rule #3.