Certificate for #4297 ⟨a, b | abababaab=ba⟩

Completion settings:

[1] abababaab=ba

Axiom: abababaab=ba.

Referenced by [4].

[2] ab=c

Axiom: ab=c.

Defines rule #5.

Referenced by [4], [5], [6], [9].

[3] ccac=d

Axiom: ccac=d.

Referenced by [4], [7].

[4] ba=cd

Overlap of [1] abababaab=ba with [2] ab=c:

abababaab ab

Critical pair: cababaab=ba.

Reduce LHS:

[2]c(ab)abaab
[2]⇒ cc(ab)aab
[2]⇒ ccca(ab)
[3]⇒ c(ccac)
⇒ cd

Flip LHS and RHS.

Defines rule #7.

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

[5] ca=acd

Overlap of [2] ab=c with [4] ba=cd:

a b ba

Critical pair: acd=ca.

Flip LHS and RHS.

Defines rule #8.

Referenced by [7], [8], [11], [12].

[6] cdb=bc

Overlap of [4] ba=cd with [2] ab=c:

b a ab

Critical pair: bc=cdb.

Flip LHS and RHS.

Defines rule #1.

Referenced by [9].

[7] acdcdc=d

Simplify [3] ccac=d.

Reduce LHS:

[5]c(ca)c
[5]⇒ (ca)cdc
⇒ acdcdc

Defines rule #6.

Referenced by [8], [9], [10], [11], [13], [14], [15].

[8] acdcdacd=da

Overlap of [7] acdcdc=d with [5] ca=acd:

acdcd c ca

Critical pair: acdcdacd=da.

Referenced by [15].

[9] ddb=cccc

Overlap of [7] acdcdc=d with [6] cdb=bc:

acdcd c cdb

Critical pair: acdcdbc=ddb.

Reduce LHS:

[6]acd(cdb)c
[6]⇒ a(cdb)cc
[2]⇒ (ab)ccc
⇒ cccc

Flip LHS and RHS.

Defines rule #2.

[10] cdcdcdc=bd

Overlap of [4] ba=cd with [7] acdcdc=d:

b a acdcdc

Critical pair: bd=cdcdcdc.

Flip LHS and RHS.

Defines rule #4.

[11] ddc=cd

Overlap of [5] ca=acd with [7] acdcdc=d:

c a acdcdc

Critical pair: cd=acdcdcdc.

Reduce RHS:

[7](acdcdc)dc
⇒ ddc

Flip LHS and RHS.

Defines rule #3.

Referenced by [12], [15].

[12] ddacd=cda

Overlap of [11] ddc=cd with [5] ca=acd:

dd c ca

Critical pair: ddacd=cda.

Referenced by [13], [14].

[13] cdacdc=ddd

Overlap of [12] ddacd=cda with [7] acdcdc=d:

dd acd acdcdc

Critical pair: ddd=cdacdc.

Flip LHS and RHS.

Referenced by [14].

[14] cdac=acdcdddd

Overlap of [7] acdcdc=d with [13] cdacdc=ddd:

acdcd c cdacdc

Critical pair: acdcdddd=ddacdc.

Reduce RHS:

[12](ddacd)c
⇒ cdac

Flip LHS and RHS.

Referenced by [15].

[15] da=adddddddd

Overlap of [8] acdcdacd=da with [14] cdac=acdcdddd:

acd cdacd cdac

Critical pair: acdacdcddddd=da.

Reduce LHS:

[14]a(cdac)dcddddd
[11]⇒ aacdcddd(ddc)ddddd
[11]⇒ aacdcd(ddc)dddddd
[7]⇒ a(acdcdc)ddddddd
⇒ adddddddd

Flip LHS and RHS.

Defines rule #9.