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〈
a
,
b
|
abab
=
aab
〉
Monoid presentation of length 7
Properties
Infinite non-commutative monoid
Completion parameters
Reduction order: left-to-right b/ca
Auxiliary generator
aab=c
Complete rewriting system
ac
⇒
cab
abc
⇒
cab
a
2
b
⇒
c
(ab)
2
⇒
c