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This is an old revision of this page, as edited by 195.200.70.49 (talk) at 11:53, 1 October 2018 (→Bonacci as Patronym). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Template:Vital article

Nationality

For Italians who lived before 1861, nationality is synonymous of ethnicity: so, we define all of them as Italian, independently of the state where they were born. The same applies for Germans before 1870. Alex2006 (talk) 06:01, 19 November 2015 (UTC)[reply]

"Portrait"

The "portrait" that the file description page on Commons claims to be by an "unknown medieval artist" (a contemporary of Fibonacci) is clearly no such thing.

The only source claimed there is a book from 1981, but it is most likely an imaginary portrait of the sort often printed in 19th century popular works on history. It has no particular historical or artistic value. It is used in a large number of Wikipedias, but the editors of the German article removed it already in 2006 (see Diskussion:Leonardo Fibonacci for the discussion). --Hegvald (talk) 07:02, 17 January 2016 (UTC)[reply]

In some cases I can see how an artistic depiction of an event from someone's life might be helpful in an article even if there is no reason to believe that the person is depicted recognizably, but in this case it's just a headshot. We should remove it unless someone can dig up provenance showing it to accurately depict Fibonacci. —David Eppstein (talk) 07:28, 17 January 2016 (UTC)[reply]
I agree too: this is only the newest example showing how superior dewiki is...Alex2006 (talk) 07:50, 17 January 2016 (UTC)[reply]
For that matter, it may also be a copyright violation. I just checked my copy of Mathematical Circus, the 1981 book the artwork was scanned from. It just labels the image as being of Fibonacci, and gives no indication of how old it is or who it is by. So the default assumption should be that it has the same copyright as the rest of the book, which is still valid. —David Eppstein (talk) 08:23, 17 January 2016 (UTC):::[reply]
Never mind, I found File:Fibonacci2.jpg which the Gardner book's copy seems to have been cropped from. It apparently dates to a mid-19th-century book, as Hegvald suggested. So not a copyvio, but still not useful as an image of the subject. —David Eppstein (talk) 08:28, 17 January 2016 (UTC)[reply]
you might want to delete it over at wikidata as well, or you will have periodic eruptions. i take it there are no contemporaneous images, so better no image than a romanticized one. 69.143.2.154 (talk) 20:58, 29 October 2016 (UTC)[reply]

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Bonacci as Patronym

The introductory section states that the name Fibonacci is a contraction of filius Bonacci, i.e. son of (the)) Bonacci. But who or what is (a) Bonacci? His father, according to the article, was named Guglielmo. There's no further explanation of the Term Bonacci, nor does it have its own article, Google Translate doesn't know it and Google itself only tells me that it's some people's surname and there's a conglomerate called the Bonacci Group.

The German Wikipedia notes that Bonacci is the name of the Grandfather and was used as a patronym by his sons, i.e. Leonardo's father and uncles. This means that his father Guglielmo was, as patronym, called Bonnacio and this finally explains Leonardo's appellation as figlio di Bonnacio. However without this context the explanation of the origin of the name Fibonacci is confusing and empty. This should be added or, if it would make the introduction too long, merged into its own section about the name. — Preceding unsigned comment added by 2001:A62:14E7:7600:9D4E:982F:BBA9:BBCE (talk) 08:48, 30 September 2018 (UTC)[reply]

Our article's sources state that the name "Fibonacci" was made up by Libri in 1838. Additionally it has the form of a patronymic, not a surname, meaning that even if it were used it would have been used by only one of Leonardo or his father but not both. Do you have evidence that it was actually used by Leonardo's father? —David Eppstein (talk) 19:12, 30 September 2018 (UTC)[reply]
As I understand it, the name "Fibonacci" was indeed not used by Leonardo or known during his lifetime. My criticism is that the page right now states that this name, as made up by Libri, means "son of (the) Bonnaci" without ever explaining who "Bonacci" actually is. From what I can gather "Bonaccio" (something like "the benign") was the name of Guglielmo's father and thus Leonardo's grandfather. Guglielmo and his brothers, Bonaccio's sons, used this name as patronym, i.e. Guglielmo would have called himself something like "Guglielmo Bonacci" (I don't speak Italian). Thus, Leonardo's father Guglielmo being called "Bonacci" explains why Leonardo was called "son of the Bonacci" by Libri. The point isn't that Leonardo ever used this name, it's that the name is mentioned in the article as the origin of Libri's appellation of "Fibonacci" but isn't given any context or explanation. Unfortunately neither the German nor the Italian Wikipedia cite any sources for their claims about the names and I wasn't able to find relevant scholarly sources in short order. P.S.: That said, the citation Nr. 2 on this article itself confirms my claims, if that's an acceptable source. — Preceding unsigned comment added by 195.200.70.49 (talk) 10:51, 1 October 2018 (UTC)[reply]
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