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Who Cites biject?
bijectDef Bij(ABf) == Inj(ABf) & Surj(ABf)
Thm* A,B:Type, f:(AB). Bij(ABf Prop
surjectDef Surj(ABf) == b:Ba:Af(a) = b
Thm* A,B:Type, f:(AB). Surj(ABf Prop
injectDef Inj(ABf) == a1,a2:Af(a1) = f(a2 B  a1 = a2
Thm* A,B:Type, f:(AB). Inj(ABf Prop

Syntax:Bij(ABf) has structure: biject(ABf)

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applyfunctionuniverseequalmemberprop
impliesandallexists
!abstraction
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WhoCites Definitions fun 1 Sections StandardLIB Doc