Nuprl - Proof: exist intseg vs iter or

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Existential quantification over a finite range is iterated disjunction.

a,b:

, P:({a..b

}

Prop). (

i:{a..b

}. P(i))

(Or i:{a..b

}. P(i))

By:

Analyze

Generated subgoal:

1 1. a :
b:, P:({a..b}Prop). (i:{a..b}. P(i)) (Or i:{a..b}. P(i))
12 steps

About:

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