sobhagyaSD's blog

A series sum
By sobhagyaSD, history, 4 years ago, In English

Here floor is floor function or greatest integer function and phi is Euler totient function.

For n < 10^4 i tried to find the f(n), and turn out to a simple expression :

Can you provide a proof or some argument related to this expression

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4 years ago, # |
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Auto comment: topic has been updated by sobhagyaSD (previous revision, new revision, compare).

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4 years ago, # |
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It's correct, here's my proof.

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    4 years ago, # ^ |
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    Got it, Thank you so much.

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    4 years ago, # ^ |
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    And the "famous lemma" indeed can be proven easily with induction over.

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