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Don't know what you're talking about. The article is about unproved theorems. They are described as being simple or obvious, but there's nothing obvious about

Prove that for n > 1, divsum(n) < H_n + exp(H_n)log(H_n)

why exp log? That's the question.



I believe that hyperbovine was referring to the article linked by tzs that explains the relation.

http://arxiv.org/pdf/math/0008177v2




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