Nuprl - Proof: and functionality wrt implies

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At: and functionality wrt implies

P1,P2,Q1,Q2:Prop. (P1

P2)

(Q1

Q2)

P1 & Q1

P2 & Q2

By:	Unfold `guard` 0 THEN HypBackchain

Generated subgoals:

None

About:

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