Nuprl - Proof: decidable quotient equal 1 1 1 1

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: decidable quotient equal 1 1 1 1

1. T : Type
2. E : T

Prop
3. EquivRel x,y:T. E(x,y)
4. f : T

x,y:T. (x f y)

E(x,y)

(x,y:T//E(x,y))

By:	ExtWith [`u'] [TT]

Generated subgoal:

1 6. u : x,y:T//E(x,y)
f(u) (x,y:T//E(x,y))
8 steps

About:

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