Nuprl - Proof: decidable quotient equal

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At: decidable quotient equal

T:Type, E:(T

Prop).

(EquivRel x,y:T. E(x,y))

(

x,y:T. Dec(E(x,y)))

(

u,v:x,y:T//E(x,y). Dec(u = v))

By:	RepeatMFor 4 (Analyze 0)

Generated subgoal:

1 1. T : Type
2. E : TTProp
3. EquivRel x,y:T. E(x,y)
4. x,y:T. Dec(E(x,y))
u,v:x,y:T//E(x,y). Dec(u = v)
20 steps

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