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At: fib coprime sfa 1 2

1. n : 
2. 0<n
3. k:k = n-1+1  (x,y:. fib(n-1)x+fib(k)y = 1)
4. k : 
5. k = n+1
  x,y:. fib(n)x+fib(k)y = 1


By: Compute fib(k) * if k= k=1 1 else fib(k-1)+fib(k-2) fi
THEN
SplitOnConclITE
THEN
CBV: a,b:. <prop>


Generated subgoal:

1 6. k = 0
7. k = 1
  a,b:. fib(n)a+(fib(k-1)+fib(k-2))b = 1

4 steps

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

(10steps total) PrintForm Definitions Lemmas NumThyExamples Sections NuprlLIB Doc