(6steps total) Remark PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc
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At: dep ax choice version2 1

1. A : Type
2. B : AType
3. Q : x:AB(x)Prop
4. x:Ay:B(x). Q(x,y)
  f:(x:AB(x)). x:AQ(x,f(x))


By: Compute4 x:Ay:B(x). Q(x,y) * x:Ay:B(x)Q(x,y)
THEN
Rename4: g THEN Witness z.1of(g(z))
THEN
Compute (z.1of(g(z)))(x) * 1of(g(x))


Generated subgoal:

1 4. g : x:Ay:B(x)Q(x,y)
5. x : A
  Q(x,1of(g(x)))

4 steps

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

(6steps total) Remark PrintForm Definitions LogicSupplement Sections DiscrMathExt Doc