Nuprl Lemma : mon_ident 13,42

g:IMonoid, a:|g|. (a * e) = a & (e * a) = a 
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Upgroups 1
Definitions of StatementIsMonoid(T;op;id), IMonoid
Definitionst  T, x:AB(x), IMonoid, P & Q, IsMonoid(T;op;id), Ident(T;op;id)
Lemmasimon wf, imon properties

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