Nuprl Basics - Proof: sfa doc ntuple contains wf 1 1 2 1 1

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At: sfa doc ntuple contains wf 1 1 2 1 1

1. A : Type
2. P : A

Prop
3. n :

4.

n1:

. n1<n

(

X:(A^n1). (

u in X: A^n1. P(u))

Prop)
5. X1 : A
6. X2 : A^(n-1)
7. n

2

(P(X1)

(

u in X2: A^(n-1). P(u)))

Prop

By:

Analyze

Generated subgoals:

1 P(X1) Prop
Auto

2 ( u in X2: A^(n-1). P(u)) Prop
1 step

About:

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

(12steps total) PrintForm Definitions Lemmas NuprlPrimitives Sections NuprlLIB Doc