Talk:Fibonacci number

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 Field: Number theory
One of the 500 most frequently viewed mathematics articles.
This article has comments.

Divisibility properties Error[edit]

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.

Thanks in advance,

GideonWanna talk? 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... GideonWanna talk? 10:17, 12 October 2013 (UTC)

"Vandalization" of MacTutor history of Mathematics reference[edit]

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)
What I have to be careful about is this kind of bias but you and your colleagues will have your way, rest assured. Yes, the article was submitted as a preprint (of course, for the review process) but MacTutor would not have put it online and linked it to their very biography of Fibonacci even it had not been accepted for publication. I cannot buy these claims about MacTutor or some of MacTutor not being "reliable" subject to your evaluation. MacTutor is mentioned in the very Wikipedia site for Pythagoras. FYI, Do you know how many people out there insist that Wikipedia itself is not authoritative? But we can all get through this with discernment and objectivity. I can understand that something of an obscure speculative history from a recent publication might be premature for this site which focusses on the Mathematics of the Fibonacci sequence. I get that and I will no longer insist on mentioning this recent MacTutor content on this particular Wikipedia site but you and your colleagues can do yourself a favor by avoiding this ad-hominem bashing of the reliability of MacTutor's content (against Wikipedia's guidelines I might add). It is an affront to its editors and its authors especially since Wikipedia does cite MacTutor in so many cases. Moreover, I don't really believe that the true objection is really the Publisher of the material but rather its content and its implications. Some of the editors simply don't appreciate the content and its controversial implications e.g. how much Fibonacci virtually plagiarized Muslim scholarship. It would have been more honest to simply admit that. At any rate, I will no longer pursue the matter.TonyMath (talk) 03:36, 23 March 2014 (UTC)

Why are the sequence examples images?[edit]

The two examples at the top of the page are images, rather than simply text. Why is this preferable? Images with text are generally considered bad from a usability standpoint. Unlike Unicode characters with distant code points, these reside in ascii (except for the trailing ellipsis) so there's no compatibility issue. — Preceding unsigned comment added by Preinheimer (talkcontribs) 15:45, 8 September 2014 (UTC)

You mean the lists of numbers at the top of the article? It's because of Wikimedia's continued poor handling of mathematics markup. They are coded using the <math> tag in the source code of the article, and by default Wikimedia turns that into an image. If you turn on mathjax rendering in your preferences it will be formatted better. As for why they're coded that way: to make them look consistent with the other mathematical formulas in the article. —David Eppstein (talk) 16:15, 8 September 2014 (UTC)

Starting points[edit]

Can there be some explanation about the starting points 1,1 versus 0,1? Right now I am confused which one to pick, and why the "0,1" is called modern starting point. (talk) 11:48, 29 October 2014 (UTC)

They are both common and both have F1=1, F2=1, F3=2, F4=3, .... The only difference is whether you also have a term F0=0 before F1. That term is practical in many situations such as some formulas which would get more cumbersome without having F0. In some applications it is logical to include F0=0, while it can easily be omitted in others. Fibonacci himself started at 1 but that was in 1202. Modern mathematical texts usually include F0=0 which has no downside for mathematicians, but less formal presentations for lay people often omit it. PrimeHunter (talk) 12:34, 29 October 2014 (UTC)

New MacTutor Bio on Fibonacci's colleague Michael Scot[edit]

Fibonacci's Liber Abaci was dedicated in 1227 to Michael Scot. Mactutor has a new bio, on Michael Scot which actually cites as a reference the aformentioned "fringy MacTutor speculative material" on the origin of the Fibonacci sequence, a reference that connects it to the bee reproduction system and was rejected here. This new bio and the authors of that so-called "fringy material" are the same. Apparently MacTutor does not reject this reference as fringy because both its bios for Fibonacci and Michael Scot cite it. For that matter, the wikipedia bios for both Fibonacci and Michael Scot cite their MacTutor counterparts. The French version of this current site on the Fibonacci sequence also cites this "fringy MacTutor material". Will the editors here now accept this reference? Naturally I fully expect people to stand their ground (I regret to say too much ego entered the earlier discussion) but I humbly submit this currently represents an inconsistency within wikipedia. However inconsistency is not new to wikipedia. Just look at the account of the six day war, wikipedia gives a different account if you look at it from the history of Syria :-) TonyMath (talk) 05:29, 25 November 2014 (UTC)

Jaime and Cersei[edit]

Someone has replaced the rabbits with Jaime and Cersei from Game of Thrones.

Okay, someone fixed this already. — Preceding unsigned comment added by (talk) 10:58, 26 February 2015‎ (UTC)