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تسجيل مستخدم جديدA discrete Faa di Brunos formula
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We derive some formulas that rule the behaviour of finite differences under composition of functions with vector values and arguments.
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About 160 years ago, the Italian mathematician Fa`a di Bruno published two notes dealing about the now eponymous formula giving the derivative of any order of a composition of two functions. We reproduce here the two original notes, Fa`a di Bruno (18
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