## Two lemmas with the Möbius function and the logarithm

In number theory, many proofs are "technical", i.e. they consist mainly in algebrical passages, by means of which an initial…

After almost three centuries, will we find a proof?

In number theory, many proofs are "technical", i.e. they consist mainly in algebrical passages, by means of which an initial…

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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