Certificate for #11515 ⟨a, b | ababa=b, abbaa=1⟩

Completion settings:

[1] ababa=b

Axiom: ababa=b.

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

[2] abbaa=1

Axiom: abbaa=1.

Referenced by [4], [5], [6].

[3] bba=abb

Overlap of [1] ababa=b with [1] ababa=b:

ab aba ababa

Critical pair: abb=bba.

Flip LHS and RHS.

Defines rule #2.

Referenced by [4], [5], [6], [7], [8], [11].

[4] baabb=abab

Overlap of [1] ababa=b with [2] abbaa=1:

abab a abbaa

Critical pair: abab=bbbaa.

Reduce RHS:

[3]b(bba)a
[3]⇒ ba(bba)
⇒ baabb

Flip LHS and RHS.

Referenced by [8], [13].

[5] baba=aabbb

Overlap of [2] abbaa=1 with [1] ababa=b:

abba a ababa

Critical pair: abbab=baba.

Reduce LHS:

[3]a(bba)b
⇒ aabbb

Flip LHS and RHS.

Defines rule #4.

Referenced by [9], [11], [12].

[6] aaabb=1

Overlap of [2] abbaa=1 with [3] bba=abb:

a bbaa bba

Critical pair: aabba=1.

Reduce LHS:

[3]aa(bba)
⇒ aaabb

Referenced by [7], [9], [12], [14], [15].

[7] aaababb=ba

Overlap of [6] aaabb=1 with [3] bba=abb:

aaab b bba

Critical pair: aaababb=ba.

Referenced by [8], [10].

[8] aaaabab=baa

Overlap of [7] aaababb=ba with [3] bba=abb:

aaaba bb bba

Critical pair: aaabaabb=baa.

Reduce LHS:

[4]aaa(baabb)
⇒ aaaabab

Referenced by [9], [10].

[9] baaa=aaab

Overlap of [8] aaaabab=baa with [5] baba=aabbb:

aaaa bab baba

Critical pair: aaaaaabbb=baaa.

Reduce LHS:

[6]aaa(aaabb)b
⇒ aaab

Flip LHS and RHS.

Referenced by [12].

[10] baab=aba

Overlap of [8] aaaabab=baa with [7] aaababb=ba:

a aaabab aaababb

Critical pair: aba=baab.

Flip LHS and RHS.

Referenced by [11].

[11] abaa=aababbb

Overlap of [5] baba=aabbb with [10] baab=aba:

ba ba baab

Critical pair: baaba=aabbbab.

Reduce LHS:

[10](baab)a
⇒ abaa

Reduce RHS:

[3]aab(bba)b
⇒ aababbb

Referenced by [12].

[12] aabbbb=aa

Overlap of [9] baaa=aaab with [11] abaa=aababbb:

baa a abaa

Critical pair: baaaababbb=aaabbaa.

Reduce LHS:

[9](baaa)ababbb
[5]⇒ aaa(baba)bbb
[6]⇒ aa(aaabb)bbbb
⇒ aabbbb

Reduce RHS:

[6](aaabb)aa
⇒ aa

Referenced by [13], [14].

[13] baa=ababbb

Overlap of [4] baabb=abab with [12] aabbbb=aa:

b aabb aabbbb

Critical pair: baa=ababbb.

Defines rule #3.

[14] aaa=bb

Overlap of [6] aaabb=1 with [12] aabbbb=aa:

a aabb aabbbb

Critical pair: aaa=bb.

Defines rule #5.

Referenced by [15].

[15] bbbb=1

Overlap of [6] aaabb=1 with [14] aaa=bb:

aaabb aaa

Critical pair: bbbb=1.

Defines rule #1.