Step of Proof: wellfounded_functionality_wrt_iff 9,38

Inference at * 1 2 
Iof proof for Lemma wellfounded functionality wrt iff:



1. T1 : Type
2. T2 : Type
3. r1 : T1T1
4. r2 : T2T2
5. T1 = T2
6. x,y:T1r1(x,y r2(x,y)
  WellFnd{i}(T1;x,y.r1(x,y))  WellFnd{i}(T2;x,y.r2(x,y)) 
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 by ((BackThruLemma `wellfounded_functionality_wrt_implies`) 
CollapseTHENA ((Auto_aux (first_nat 
C1:n) ((first_nat 1:n),(first_nat 3:n)) (first_tok :t) inil_term))) 
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C1

C1:   T2 = T1
C2

C2:   x,y:T2. {r2(x,y r1(x,y)}
C.


Definitionsx,yt(x;y), t  T, P  Q, P  Q, x(s1,s2), {T}, x:AB(x)
Lemmaswellfounded functionality wrt implies

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