Certificate for #3187 ⟨a, b | ab=a, bba=aaa

Completion settings:

[1] ab=a

Axiom: ab=a.

Defines rule #1.

Referenced by [3].

[2] bba=aaa

Axiom: bba=aaa.

Defines rule #2.

Referenced by [3].

[3] aaaa=aa

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

a b bba

Critical pair: aaaa=aba.

Reduce RHS:

[1](ab)a
aa

Defines rule #3.