## The Möbius inversion formula

In the post Some important summations we introduced the summations extended to couples of variables the product of which divides…

After almost three centuries, will we find a proof?

In the post Some important summations we introduced the summations extended to couples of variables the product of which divides…

The properties of the divisors of natural numbers which we saw in the previous post let us define a function…

In this post we'll illustrate two properties of the divisors of natural numbers, starting from the simplest case, in which…

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