Nuprl - Proof: iter prod zero iff factor zero 1 2

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At: iter prod zero iff factor zero 1 2

1. a :

2.

b:

, e:({a..b

}

).
2. a

b

((

i:{a..b

}. e(i)) = 0

(Or i:{a..b

}. e(i) = 0))
3. b :

4. e : {a..b

}

(

i:{a..b

}. e(i)) = 0

(Or i:{a..b

}. e(i) = 0)

By:	Decide: ab

Generated subgoals:

1 5. ab
( i:{a..b}. e(i)) = 0 (Or i:{a..b}. e(i) = 0)
1 step

2 5. ab
( i:{a..b}. e(i)) = 0 (Or i:{a..b}. e(i) = 0)
2 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