Nuprl - Proof: iter prod zero iff factor zero

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At: iter prod zero iff factor zero

a,b:

, e:({a..b

}

). (

i:{a..b

}. e(i)) = 0

(

i:{a..b

}. e(i) = 0)

By:	Rewrite by Thm* a,b:, P:({a..b}Prop). (i:{a..b}. P(i)) (Or i:{a..b}. P(i)) THEN Analyze

Generated subgoal:

1 1. a :
b:, e:({a..b}). ( i:{a..b}. e(i)) = 0 (Or i:{a..b}. e(i) = 0)
12 steps

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

(13steps total) PrintForm Definitions Lemmas IteratedBinops Sections DiscrMathExt Doc