Nuprl - Proof: choose elim neg 1 2 1 1

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At: choose elim neg 1 2 1 1

1. 'a : S
2. P : 'a

Prop
3. Q : 'a

Prop
4.

x:'a. Q(x)

P(x)
5. (

x:'a. Q(x)

Void)

(

x:'a. P(x))
6. {x:'a| Q(x) }

Void
7. x : 'a
8. Q(x)

Void

By:	Analyze 6 THEN StrongAuto

Generated subgoal:

1 {x:'a| Q(x) }
1 step

About:

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