Recent questions and answers in Number Theory

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1 answer
Prove the following using mathematical induction

$\sum_{i=1}^{n}i^3 = (\sum_{i=1}^{n}i)^2$

+1 vote
1 answer
Prove this statement about the mobius function:

If d>1 and d3 divides n, then  $\sum_{xx'=n}^{}$ $\mu (x)*\mu (x')=0$.

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