Definitions MarkB generic Sections NuprlLIB Doc

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letDef let x = a in b(x) == (x.b(x))(a)
Thm* A,B:Type, a:A, b:(AB). let x = a in b(x) B

Syntax:let x = a in b(x) has structure: let(a; x.b(x))

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Definitions MarkB generic Sections NuprlLIB Doc