Talk:Leonhard Euler

Expressions That May Lead to Confusion

Section 2.1 Mathematical notation, line 3: He also introduced ... the letter e for the base of the natural logarithm (now also known as Euler's number)

Section 2.5 ... describing numerous applications of ... Euler numbers

It is hard to distinguish between Euler's number and Euler number. Although there are seperate pages devoted to the two concepts, this may still lead to confusion for beginners and those who use English as a foreign language. Shouldn't there be "see also" links behind both expressions?

-- User:Dale Zhong 14:59, 7 July 2007 (GMT+0800)

Pronunciation of name

The correct pronunciation is shown in phonetic symbols (IPA) and in an English approximation. The two do not appear to match. This is also true in the footnote, which explains how not to pronounce the name. I believe that the English approximations of the correct and incorrect pronunciations have been switched. Cctimar (talk) 19:29, 17 April 2023 (UTC)

There was some vandalism to this part of the article today. Maybe you saw it in its vandalized state. —David Eppstein (talk) 20:33, 17 April 2023 (UTC)

Inaccurate reference

In Leonhard Euler#Personal philosophy and religious beliefs is mentioned that Euler also labelled Wolff's ideas as "heathen and atheistic", with reference to Calinger 1996, pp. 153–154. However, in the mentioned article we read, instead, that Euler knew well that pietists and conservative theologians had labelled Wolff’s rational, mathematical philosophy as ‘‘heathen and atheistic’’ from the 1720s, and not that it was not Euler himself who labelled thus Wolff's ideas. I propose this reference to be removed or corrected. (The other one is accurate.) AresPi (talk) 13:30, 6 June 2023 (UTC)

@David_Eppstein Doing the talk page thing, lest I draw cries of "Edit War"! The summary for your recent revert reads:

"They are collected in X" means that they can all be found as a collection in X". "They are being collected in X" means that at the present time someone is putting together a collection of them. The first is true; the second is false.

However, the Opera Omnia Leonhard Euler is not yet complete (at least as of September 2022, according to the article). Hence, the sentence in question ending in "will consist of 81 quarto volumes" (emphasis added). So the latter is true (as someone is ostensibly still, at this present time, putting together the collection), and the former is false (until the collection is complete).

That is, unless the final publication (Volume IVA/9) has been released since September 2022. If it has been, you should update the end of the sentence and also the article for the Opera Omnia itself, rather than reverting the change.

Unless you have further objections, I'll reinstate @Toddcs's edit after some arbitrary wait. Reil (talk) 04:20, 27 October 2023 (UTC)

Ok, with this justification, I think it's ok to reinstate the edit. But Toddcs's claim that the original was ungrammatical was incorrect. It is grammatical, it just means something different. —David Eppstein (talk) 05:22, 27 October 2023 (UTC)

@david_eppstein Thank you for all that, especially for analyzing my change itself, in order to understand my intent, which you did perfectly.

When I labeled my change as a grammar fix, I was giving the original writer the benefit of the doubt, that they knew the difference between "are collected" and "are being collected," but had only taken a shortcut in expressing it.

Thanks again for analyzing my change, instead of simply relying on its annotation alone. And for essentially concurring, it seems, in my underlying observation. Toddcs (talk) 17:43, 27 October 2023 (UTC)

Hollow Earth

How is his most important work not mentioned here??? 79.106.203.40 (talk) 09:03, 9 March 2024 (UTC)

Featured picture scheduled for POTD

Hello! This is to let editors know that File:Leonhard Euler_-_Jakob_Emanuel_Handmann_(Kunstmuseum_Basel).jpg, a featured picture used in this article, has been selected as the English Wikipedia's picture of the day (POTD) for October 3, 2024. A preview of the POTD is displayed below and can be edited at Template:POTD/2024-10-03. For the greater benefit of readers, any potential improvements or maintenance that could benefit the quality of this article should be done before its scheduled appearance on the Main Page. If you have any concerns, please place a message at Wikipedia talk:Picture of the day. Thank you!  — Amakuru (talk) 13:18, 25 September 2024 (UTC)

I was looking at this FP today and wondering what he was wearing on his head. I see much speculation out there such as the amusing Math hats but no clear answers. I think we should be told.... Andrew🐉(talk) 22:20, 3 October 2024 (UTC)

Leonhard Euler (1707–1783) was a Swiss mathematician and physicist. He developed important concepts and proved mathematical theorems in fields as diverse as calculus, number theory and topology. Euler introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also renowned for his work in mechanics, optics and astronomy. Euler is considered to be the preeminent mathematician of the 18th century and one of the greatest of all time. According to Guinness World Records, he is also the most prolific; his collected works fill 60 to 80 quarto volumes. Euler was featured on the sixth series of the Swiss ten-franc banknote and on numerous Swiss, German and Russian stamps. The asteroid 2002 Euler was named in his honor. This portrait of Euler was created by the Swiss painter Jakob Emanuel Handmann in 1753 and is now in the collection of the Kunstmuseum Basel.

Painting credit: Jakob Emanuel Handmann; restored by Bammesk

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