Nuprl Lemma : atom-deq-aux 11,40

a,b:atom. (a = b (eq_atom(ab)) 
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Definitionsx:AB(x), P  Q, P  Q, prop{i:l}, P  Q, t  T, xt(x), P  Q, x(s)
Lemmasall functionality wrt iff, iff wf, assert wf, eq atom wf, iff functionality wrt iff, assert of eq atom

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