Nuprl - Proof: rel inverse exp 2 2

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At: rel inverse exp 2 2

1. T : Type
2. R : T

Prop
3. n :

4. 0<n
5.

x,y:T. (x R^n-1^-1 y)

(x R^-1^n-1 y)
6. x : T
7. y : T
8. x R^-1^n y

y R^n x

By:	RecUnfold `rel_exp` -1 THEN MoveToConcl -1 THEN SplitOnConclITE THEN Reduce 0 THEN ExRepD

Generated subgoal:

1 8. n = 0
9. z : T
10. x R^-1 z
11. z R^-1^n-1 y
y R^n x
4 steps

About:

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