Certificate for #987 ⟨a, b | abababa=ab

Completion settings:

[1] abababa=ab

Axiom: abababa=ab.

Referenced by [3].

[2] ab=c

Axiom: ab=c.

Defines rule #2.

Referenced by [3], [4], [5].

[3] abababa=c

Simplify [1] abababa=ab.

Reduce RHS:

[2](ab)
c

Referenced by [4].

[4] ccca=c

Overlap of [3] abababa=c with [2] ab=c:

abababa ab

Critical pair: cababa=c.

Reduce LHS:

[2]c(ab)aba
[2]cc(ab)a
ccca

Defines rule #1.

Referenced by [5].

[5] cb=cccc

Overlap of [4] ccca=c with [2] ab=c:

ccc a ab

Critical pair: cccc=cb.

Flip LHS and RHS.

Defines rule #3.