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Abelian monoid
Set
context
$M$
definiendum
$ \langle M,* \rangle \in \mathrm{AbelianMonoid}(M)$
context
$ \langle M,* \rangle \in \mathrm{Monoid}(M)$
range
$a,b\in X$
postulate
$a*b=b*a$
Discussion
Reference
Wikipedia:
Monoid
Parents
Subset of
Monoid
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