Nuprl - Proof: comp assoc

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At: comp assoc

A,B,C,D:Type, f:(A

B), g:(B

C), h:(C

D). h o g o f = h o g o f

By:	UnivCD THEN (Unfold `compose` 0 THEN Reduce 0)

Generated subgoal:

1 1. A : Type
2. B : Type
3. C : Type
4. D : Type
5. f : AB
6. g : BC
7. h : CD
(x.h(g(f(x)))) = (x.h(g(f(x)))) AD
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