(15steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
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At: one one corr fams sym 1 1 1 3 2 1 2

1. A : Type
2. A' : Type
3. B : AType
4. B' : A'Type
5. f : AA'
6. g : A'A
7. F : x:AB(x)B'(f(x))
8. G : x:AB'(f(x))B(x)
9. InvFuns(A;A';f;g)
10. u:A. InvFuns(B(u);B'(f(u));F(u);G(u))
11. G o g  x':A'B'(x')B(g(x'))
12. F o g  x':A'B(g(x'))B'(x')
13. u : A'
14. InvFuns(B(g(u));B'(u);F(g(u));G(g(u)))
  InvFuns(B'(u);B(g(u));(G o g)(u);(F o g)(u))


By: BackThru: Thm*  InvFuns(A;B;f;g InvFuns(B;A;g;f)


Generated subgoal:

1   InvFuns(B(g(u));B'(u);(F o g)(u);(G o g)(u))
1 step

About:
applyfunctionuniversememberimpliesall
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(15steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc