Wikipedia:Reference desk/Archives/Mathematics/2018 July 27

= July 27 =

Request for review: Edit to Integration by Parts article
Hello,

I recently made an edit to the Integration by Parts article on Wikipedia. My edits were removed by DVdm and, unfortunately, I was not able to convince him that my arguments are correct. I can understand them being removed due to improper citation but I'm not sure it is necessary to have a citation in this instance.

I would like a second opinion on my proposed edits. Here is a link to my talk page, with my discussion with DVdm: https://en.wikipedia.org/wiki/User_talk:Lordofdominion

Thank you for your help!Lordofdominion (talk) 14:21, 27 July 2018 (UTC)
 * You asked for a second opinion, and I have given one on your talk page. The editor who uses the pseudonym "JamesBWatson" (talk) 14:39, 27 July 2018 (UTC)


 * FYI, for requests like this, I think WT:WPM is a better place to ask. There are a good number of people who regularly edit math articles who watch over there, but not here at the ref desk.  –Deacon Vorbis (carbon &bull; videos) 15:29, 27 July 2018 (UTC)
 * +1. This page is for asking questions about math; WT:WPM is for discussing what to do about math articles.  Sometimes there's a certain amount of overlap, of course, but I don't think there's much in this particular case.
 * That said, no great harm done; I just think it's worth repeating the point so everyone's aware. --Trovatore (talk) 20:21, 27 July 2018 (UTC)
 * Indeed, no harm done. I had pointed user Lordofdominion to this place to ask questions about why his original edit was problematic. I think that has been cleared up now. Cheers all. - DVdm (talk) 20:40, 27 July 2018 (UTC)

Prime number races by moduli
I'm seeking information related to the commonly known early bias of primes being more frequently congruent to 2 than 1 modulo 3 amongst small primes (in temporary apparent opposition to the density version of Dirichlet's Theorem), specifically but not exclusively. There's no article 'Prime number races', that one might expect, and no mention at 3. — Preceding unsigned comment added by Julzes (talk • contribs) 22:43, 27 July 2018 (UTC)
 * Prime number race is a redirect. Chebyshev's bias for modulo 4 is better known. http://mathworld.wolfram.com/ChebyshevBias.html also mentions modulo 3. A 1978 paper about it: Details of the First Region of Integers x with $\pi_{3,2}(x) < \pi_{3,1}(x)$. The first integer x is 608981813029, the 23338590792nd prime. You can Google for those numbers to find more information. PrimeHunter (talk) 23:48, 27 July 2018 (UTC)

Oh, thank you for reminding me of the meaning of Chebyshev bias and the rest.Julzes (talk) 10:29, 28 July 2018 (UTC)