Nuprl - Proof: ifthenelse distr subtype ooc 1

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: ifthenelse distr subtype ooc 1

1. A : Type
2. b :

3. P : A

Prop
4. Q : A

Prop
5. {x:A| if b

P(x) else Q(x) fi } =ext if b

{x:A| P(x) } else {x:A| Q(x) } fi

{x:A| if b

P(x) else Q(x) fi } ~ if b

{x:A| P(x) } else {x:A| Q(x) } fi

By:	OOCifExteq

Generated subgoals:

None

About:

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