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?68.173.113.106 (talk) 00:12, 5 March 2012 (UTC)[reply]

Talk on harmonic progression in mathematics GKWILLIAM (talk) 17:32, 28 July 2017 (UTC)[reply]

This is obviously false, as non-zero constant sequences are harmonic sequences and constant integer sequences sum to integers. I think it should say finite harmonic series of distinct unit fractions, as the lemma the source seems to be a generalization of is about sums of consecutive unit fractions. However I don't know the language the source is written in. Ninjamin (talk) 19:52, 12 September 2019 (UTC)[reply]

Using the German synopsis at the end the quoted source, I was able to verify my guess (or a very slight variation of it). It says, if a, d and n are positive integers, then is never an integer. I will adjust the article. Ninjamin (talk) 09:44, 13 September 2019 (UTC)[reply]

Why isn't the sum of n terms in a HP added.

it is 1/d * log{[2n+(2n-1)d]/[2a-d]} SYED BADIUDDIN ANAS (talk) 11:36, 24 March 2024 (UTC)[reply]

I think that is the approximation formula WorldDiagram837 (talk) 01:29, 14 March 2025 (UTC)[reply]

your source? WorldDiagram837 (talk) 01:29, 14 March 2025 (UTC)[reply]

Perhaps we should add another source that isn't a paper written in hungarian. I understand it's an early Erdos paper and it's pretty cool but there should also be an english language source for that. 167.56.3.102 (talk) 20:26, 11 March 2025 (UTC)[reply]