Certificate for #6660 ⟨a, b | aab=a, bbbb=ba⟩

Completion settings:

[1] aab=a

Axiom: aab=a.

Referenced by [3], [5], [6], [11], [12].

[2] bbbb=ba

Axiom: bbbb=ba.

Defines rule #4.

Referenced by [3], [4], [6], [8], [12].

[3] abbb=aa

Overlap of [1] aab=a with [2] bbbb=ba:

aa b bbbb

Critical pair: aaba=abbb.

Reduce LHS:

[1](aab)a
⇒ aa

Flip LHS and RHS.

Referenced by [10].

[4] bab=bba

Overlap of [2] bbbb=ba with [2] bbbb=ba:

b bbb bbbb

Critical pair: bba=bab.

Flip LHS and RHS.

Referenced by [5], [6], [7], [9], [10].

[5] aba=a

Overlap of [1] aab=a with [4] bab=bba:

aa b bab

Critical pair: aabba=aab.

Reduce LHS:

[1](aab)ba
⇒ aba

Reduce RHS:

[1](aab)
⇒ a

Referenced by [7].

[6] bbaa=ba

Overlap of [2] bbbb=ba with [4] bab=bba:

bbb b bab

Critical pair: bbbbba=baab.

Reduce LHS:

[2](bbbb)ba
[4]⇒ (bab)a
⇒ bbaa

Reduce RHS:

[1]b(aab)
⇒ ba

Referenced by [8].

[7] abba=ab

Overlap of [5] aba=a with [4] bab=bba:

a ba bab

Critical pair: abba=ab.

Referenced by [9], [10].

[8] bbba=baaa

Overlap of [2] bbbb=ba with [6] bbaa=ba:

bb bb bbaa

Critical pair: bbba=baaa.

Referenced by [9].

[9] bba=baaaa

Overlap of [4] bab=bba with [7] abba=ab:

b ab abba

Critical pair: bab=bbaba.

Reduce LHS:

[4](bab)
⇒ bba

Reduce RHS:

[4]b(bab)a
[8]⇒ (bbba)a
⇒ baaaa

Defines rule #3.

[10] abb=aaa

Overlap of [7] abba=ab with [4] bab=bba:

ab ba bab

Critical pair: abbba=abb.

Reduce LHS:

[3](abbb)a
⇒ aaa

Flip LHS and RHS.

Referenced by [11], [12].

[11] ab=aaaa

Overlap of [1] aab=a with [10] abb=aaa:

a ab abb

Critical pair: aaaa=ab.

Flip LHS and RHS.

Defines rule #2.

Referenced by [12].

[12] aaaaa=a

Overlap of [10] abb=aaa with [2] bbbb=ba:

a bb bbbb

Critical pair: aba=aaabb.

Reduce LHS:

[11](ab)a
⇒ aaaaa

Reduce RHS:

[1]a(aab)b
[1]⇒ (aab)
⇒ a

Defines rule #1.