Nuprl Lemma : equiv_rel_self_functionality 13,42

T:Type, R:(TT).
EquivRel(T;x,y.R(x,y))  {aa'bb':TR(a,b R(a',b' (R(a,a' R(b,b'))} 
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Uprel 1, rel 1
Definitions{T}, x,yt(x;y), t  T, P  Q, P & Q, P  Q, x(s1,s2), P  Q, , x:AB(x), Trans(T;x,y.E(x;y)), Sym(T;x,y.E(x;y)), Refl(T;x,y.E(x;y)), EquivRel(T;x,y.E(x;y))
Lemmasequiv rel wf

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