Timeline for $\frac{dy}{dx}$ versus $\frac{{\mathrm d}y}{{\mathrm d}x}$
Current License: CC BY-SA 3.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 1, 2018 at 9:54 | comment | added | MBN | How can anyone even notice the difference? I mean when you are looking only at one of them. | |
| Mar 1, 2018 at 3:55 | history | edited | Francois Ziegler |
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| Mar 1, 2018 at 2:02 | comment | added | paul garrett | My facetious answer is that "this started when people were able to squander time fooling with fonts, rather than content". For some period of time, I myself did go along with such distinctions, but ... I recovered. :) | |
| Feb 28, 2018 at 14:41 | answer | added | Michael Bächtold | timeline score: 10 | |
| Nov 22, 2017 at 9:49 | vote | accept | JRN | ||
| Nov 22, 2017 at 2:02 | comment | added | Gerald Edgar | Similarly, in Europe you see $\mathrm{e}^x$ and not $e^x$ for the exponential function, and $\mathrm{i}$ and not $i$ for $\sqrt{-1}$ | |
| Nov 22, 2017 at 2:00 | comment | added | Gerald Edgar | In current mathematical publishing, you find predominantly italic d in the US and Roman d in Europe. | |
| Nov 22, 2017 at 1:47 | comment | added | Michael E2 | OK. Answer posted. I found a precedent, a standard for physics that was the basis for the ISO standard. | |
| Nov 22, 2017 at 1:46 | answer | added | Michael E2 | timeline score: 8 | |
| Nov 22, 2017 at 0:58 | comment | added | JRN | @MichaelE2, juanrga's answer is good, but your comment answers my "when" question. I would prefer that the information you provided be stored as an answer, even if it is not definitive. | |
| Nov 21, 2017 at 21:28 | comment | added | Michael E2 | I think the answer by @juan is sufficient? Also related: tex.stackexchange.com/questions/14821/… | |
| Nov 21, 2017 at 18:45 | answer | added | juanrga | timeline score: 5 | |
| Nov 21, 2017 at 1:18 | comment | added | JRN | @MichaelE2, your comment answers my question. Please put it in an answer so I can accept it. Thanks. | |
| Nov 21, 2017 at 1:17 | comment | added | JRN | @juanrga, the "why" would also be welcome. | |
| Nov 20, 2017 at 19:58 | comment | added | Michael E2 | Perhaps 1992 (ISO-31); see also ISO 80000-2. Related TUGBoat article (1997). Basically $\mathrm d$ can't be a variable if it's upright, because variables are in italics. It's a question of consistency trumping beauty/tradition, somewhat like the fate of Pluto. Makes me sad. :( | |
| Nov 20, 2017 at 19:02 | review | Close votes | |||
| Nov 26, 2017 at 3:02 | |||||
| Nov 20, 2017 at 16:56 | comment | added | juanrga | I don't know when, but I know why. Are you only interested in the "when"? | |
| Nov 20, 2017 at 13:04 | history | asked | JRN | CC BY-SA 3.0 |