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At: quotient 1 1 corr

A,B:Type, f:(AB), R:(BBProp). Bij(A; B; f) (EquivRel x,y:B. x R y) (F:((x,y:A//(x R_f y))(x,y:B//(x R y))). Bij(x,y:A//(x R_f y); x,y:B//(x R y); F))
By: UnivCD
Generated subgoal:

11. A: Type
2. B: Type
3. f: AB
4. R: BBProp
5. Bij(A; B; f)
6. EquivRel x,y:B. x R y
F:((x,y:A//(x R_f y))(x,y:B//(x R y))). Bij(x,y:A//(x R_f y); x,y:B//(x R y); F)

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alluniversefunctionpropimpliesexistsquotient