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〈
a
,
b
|
aaababbaa
=
a
〉
Monoid presentation of length 10
Properties
Infinite non-commutative monoid
Completion parameters
Reduction order: left-to-right ab
Complete rewriting system
abab
2
a
2
⇒
a
2
bab
2
a
a
4
bab
2
a
⇒
a