Nuprl Lemma : mon_hom_p_id 13,42

g:GrpSig. IsMonHom{g,g}(Id{|g|}) 
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Upgroups 1
Definitions of StatementIsMonHom{M1,M2}(f)
Definitionst  T, Id, x f y, FunThru2op(A;B;opa;opb;f), P & Q, Id{T}, IsMonHom{M1,M2}(f), x:AB(x)
Lemmasgrp sig wf, grp id wf, grp car wf, grp op wf

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