Certificate for #2004 ⟨a, b, c | abc=bc, ccc=1⟩

Completion settings:

[1] abc=bc

Axiom: abc=bc.

Referenced by [3].

[2] ccc=1

Axiom: ccc=1.

Defines rule #2.

Referenced by [3].

[3] ab=b

Overlap of [1] abc=bc with [2] ccc=1:

ab c ccc

Critical pair: ab=bccc.

Reduce RHS:

[2]b(ccc)
⇒ b

Defines rule #1.