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At: connex functionality wrt iff

  T:Type, R,R':(TTProp).
  (x,y:TR(x,y R'(x,y))
  
  (Connex(T;x,y.R(x,y))  Connex(T;x,y.R'(x,y)))


By: UnivCD THEN (Unfold `connex` 0)


Generated subgoal:

1 1. T : Type
2. R : TTProp
3. R' : TTProp
4. x,y:TR(x,y R'(x,y)
  (x,y:TR(x,y R(y,x))  (x,y:TR'(x,y R'(y,x))

2 steps

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