Certificate for #16500 ⟨a, b | aab=ab, abb=aaa

Completion settings:

[1] aab=ab

Axiom: aab=ab.

Defines rule #1.

Referenced by [3].

[2] abb=aaa

Axiom: abb=aaa.

Defines rule #2.

Referenced by [3].

[3] aaaa=aaa

Overlap of [1] aab=ab with [2] abb=aaa:

a ab abb

Critical pair: aaaa=abb.

Reduce RHS:

[2](abb)
aaa

Defines rule #3.