Certificate for #1630 ⟨a, b | aab=ab, bba=a

Completion settings:

[1] aab=ab

Axiom: aab=ab.

Defines rule #2.

Referenced by [3].

[2] bba=a

Axiom: bba=a.

Defines rule #3.

Referenced by [3].

[3] aaa=aa

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

aa b bba

Critical pair: aaa=abba.

Reduce RHS:

[2]a(bba)
aa

Defines rule #1.