Nuprl - Proof: flip lemma 1 2 2

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At: flip lemma 1 2 2

1. k :

2. x :

k
3. y :

k
4. z :

k
5.

y = z
6.

x = y
7. x1 :

k
8. x1 = x

y = if y=

z ; y=

x else y fi

By:	Repeat SplitOnConclITE

Generated subgoals:

None

About:

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