# Talk:Fibonacci number

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Field: Number theory
One of the 500 most frequently viewed mathematics articles.

## Origins

The photo in the icon (with the page from Liber Abaci) is broken. However, when is clicked, the original photo is right. Can someone restore the photo in the icon? (I don't know how to do this). Thanks. — Preceding unsigned comment added by 223.27.210.130 (talk) 03:39, 24 November 2012 (UTC)

## GA Review

Reviewer: TonyTheTiger (talk · contribs) 14:26, 4 April 2013 (UTC)

I'll take a look at this one.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 14:26, 4 April 2013 (UTC)

The disambiguation link tool to the right reveals 4 issues to be addressed.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 23:18, 8 April 2013 (UTC)
Origins
• "saying that the cases for m beats (Fm+1) is obtained by adding a [S] to Fm cases and [L] to the Fm−1 cases" Makes little sense to me.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 05:03, 12 April 2013 (UTC)
• Revise each line of the first, second, third and fourth month to say how many rabbits and thus how many pairs. It gets confusing and I think some of your explaintions make it more so.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 05:03, 12 April 2013 (UTC)
List of Fibonacci numbers
• Whereas there seems to be a useful relationship with the bunnies justifying considering Fibonacci numbers, you present no reason for the relevance of the negafibonaccis.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 05:09, 12 April 2013 (UTC)
Occurrences in mathematics
• Most of this section is unsourced, leaving the reader to question the veracity of the claim and to wonder if these were selected from a much larger list of examples.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 20:22, 14 April 2013 (UTC)
• I am going to FAIL this article. There are too many subsections that are entirely unsourced. I am so far removed from my Masters in Stats that I keep looking for references that are not there. Any reader who wants to read this article will be at a loss to WP:V many important elements of the article.--TonyTheTiger (T/C/BIO/WP:CHICAGO/WP:FOUR) 20:31, 14 April 2013 (UTC)
• This is so filled with jargon, I can barely read it. 66.87.67.72 (talk) 03:17, 12 June 2014 (UTC)

## Article name

It seems to me the current name "Fibonacci number" is not the best option. Wouldn't "Fibonacci numbers" (note the s), "Fibonacci series" or specially "Fibonacci sequence" be a better alternative? --Götz (talk) 04:43, 2 July 2013 (UTC)

What's wrong with the current title? "Not the best option" is too vague to be helpful. I suspect that "number" better fits WP:COMMONNAME than "series" or "sequence" (which you also haven't provided any specific reason for preferring). "Numbers" does not match WP:SINGULAR. —David Eppstein (talk) 04:49, 2 July 2013 (UTC)
I was not aware of WP:SINGULAR, although I find it odd that when describing a series/sequence, the page title is in singular, and the rest of the article is in plural. But there is also WP:PLURAL, under the Exceptions section, "Similarly, one is much more likely to mention the Bernoulli numbers than a particular Bernoulli number."
Then, following WP:Search engine test and considering WP:SINGULAR, it seems that "sequence" fits better with WP:COMMONNAME, as it can be seen in Google Ngram and Google Trends. But, what should we do regarding WP:SINGULAR and WP:PLURAL? --Götz (talk) 17:42, 2 July 2013 (UTC)
I agree that Fibonacci sequence is a better name. Google Trends (Thanks Götz!) supports the idea that "fibonacci sequence" is most common. And when recently doing research on the Fibonacci sequence (how I got here), I always searched for the more familiar "fibonacci sequence." Are there any good reasons or precedents for leaving the title as Fibonacci number? Tedsanders (talk) 03:07, 21 August 2013 (UTC)
Most Wikipedia articles about an individual sequence of integers are named "X number" rather than "X sequence". An article named "X sequence" is usually about a family of integer sequences with similar characteristics (examples are Hofstadter sequence, fractal sequence, complete sequence). But there are exceptions to this "rule" - for example, Padovan sequence, Golomb sequence and Euclid–Mullin sequence are all articles about individual sequences. Renaming this article to Fibonacci sequence (which is currenctly a redirect) has been occassionally suggested in the past - see this talk page archive - but never actioned AFAIK. Gandalf61 (talk) 09:54, 21 August 2013 (UTC)

## Divisibility properties Error

It look like there is an Error Displayed under the Section "Divisibility properties" which is under "Primes and divisibility"

Check it out here: Fibonacci_number#Divisibility_properties

I don't know to code "math" so if anyone how knows whats going on in that section please fix it immediately!

If there is no Error displayed it might have been fixed or removed.

04:51, 12 October 2013 (UTC)

Can you state exactly what is the error? The only one that I have found is the "it follows" of the second paragraph: the result does not follows immediately from the previous one, but is an easy consequence of the basic recurrence relation. I have corrected this. On the other hand, if the error lies in the math display, it is possible that it is not an error in the article, but in the data transmission; it seems that Internet did not work correctly yesterday. D.Lazard (talk) 07:53, 12 October 2013 (UTC)
hey D.Lazard I', sorry I think its the internet problem (My Fault!) Really sorry, I should have reloaded the webpage!! Sorry, Thanks though... 10:17, 12 October 2013 (UTC)

## "Vandalization" of MacTutor history of Mathematics reference

User:Wcherowi removed my so-called "tongue in cheek" reference to a publication from the MacTutor history of Mathematics archive, claiming that it is not published. This is absurd. The url was given to the publication itself. MacTutor publishes refereed articles ONLINE! MacTutor is a reputable archive of mathematical history. I want to put this material back. It is instructive.TonyMath (talk) 01:40, 21 March 2014 (UTC)

FYI, I would also like to point out that this published refereed paper is linked to the very biography of Fibonacci himself at the MacTutor historical archive in St-Andrews University. It's at the top of the list of "Additional material". I Also note that Ron Knott's material on the Fibonacci numbers is also online and cited in this very article. So what is this egregious comment "tongue-in-cheek" all about?
This preprint was submitted to MacTutor in March 2014. I hardly think it has been refereed in this short period. While I generally respect the MacTutor material, it can be of uneven quality. At best this could be considered an opinion piece (advancing a hypothesis) and would not be published in a legitimate scholastic journal. Its appearance on-line does not make it a reliable source. Even if I am wrong about it being a hoax, it is clearly a case of WP:TOOSOON. Bill Cherowitzo (talk) 04:51, 21 March 2014 (UTC)
I happen to know that the article had been seen long before the March date and was refereed by the editors themselves. Edmund F. Robertson had seen this article as far back as September 2013 i.e. several months before in fact. What is this stuff about MacTutor not being a legitimate scholastic journal? The editors of MacTutor material would not have linked the biography of Fibonacci to this paper had they not considered it acceptable.TonyMath (talk) 08:54, 21 March 2014 (UTC)
BTW, Reference to MacTutor appears in the Wikipedia site for Al-Karaji namely Note no. 3 and References_and_external_links. MacTutor is also cited in the general references of the Wikipedia site on the great Mathematicians Muḥammad ibn Mūsā al-Khwārizmī and Abū Kāmil Shujāʿ ibn Aslam. MacTutor is intensely involved in studying Mathematics of the middle-ages. So explain something to me: if MacTutor is an acceptable reference in these sites, then why not here?TonyMath (talk) 09:02, 21 March 2014 (UTC)
I checked the Wikipedia site MacTutor History of Mathematics archive and if you use the tools on the left and find what cites to that archive: you find a HUGE number of Wikipedia articles that cite MacTutor! It is so big, they have to be categorized in alphabetical order. I am all the more amazed at the claim that MacTutor is not a sufficiently credible citation for Wikipedia herein.TonyMath (talk) 10:03, 21 March 2014 (UTC)
You have to be careful with MacTutor. Their biographies are reliable but some of their other stuff is just student essays that should not be considered reliable. In particular, I do not believe that the source in question, [1], should be considered reliable. It is not one of the biographies, is labeled as a preprint, does not seem to have been reliably published, and contains what looks to me like decidedly fringey speculation. —David Eppstein (talk) 12:46, 22 March 2014 (UTC)