Hot answers tagged

26

I agree. Screenshots of text have no place on this site. There is simply no reason that plain text should ever be presented as a screenshot, and plenty of reasons why it shouldn't. If you want to quote text from a separate source which you have as an image, it is your responsibility to transcribe it. Transcribing the text, simply put, makes the site easier ...


19

I would argue that MathJax in titles should be kept to the minimum required, and as readable as possible, but if it is integral to writing a good title for the question then it should very much stay there. In other words, if a title requires explicit mathematics, then those explicit mathematics should stay there. Our site has a bunch of questions that are ...


17

Yes, there is a \tag{} command. E.g. $$ 1+1=2 \tag{1} $$ produces $$ 1+1=2 \tag{1} $$


17

I see two relevant classes of users here: The user in question is a relative newcomer, and they've come to rely on other people fixing posts with substantial amounts of mistyped math for them as if by magic. After a first few occurrences, a sharp indication that they need to do the formatting themselves is in order, followed by downvotes if the poster ...


16

Ask and you shall receive. This site is in line for CSS conversion, and, while we're in there, we'll make sure that we match the serif font in the body like Chemistry SE and Math SE. Thanks!


15

I agree that text should not be a screenshot. A link could refer to the text and the content described. That elsewhere reference refers indirectly to me, because I am not open to learning mathjax . The reason is age, so if the physics.SE community wants to discourage old physicists, they should state it clearly. I started with computers back in 1967 ,often ...


12

If you convince your administrator to enable mhchem here – chemistry.SE does have it – then you could make use of MathJax/mhchem's \pu command. $1.38 \times 10^{-23} \, \mathrm{J\,K^{-1}}$ could then be written as \pu{1.38E-23 J K^-1} See how it renders at chemistry.SE. Background information: MathJax is a LaTeX implementation, written in JavaScript. ...


10

Technically you can downvote for whatever reason you want. (Any reason based on the content of the post, that is. If you downvote because of who posted it, that's not okay.) So if you want to downvote a post because it doesn't use MathJax for the formulas, that is, strictly speaking, okay. It may or may not be a good idea, however. I think there is ...


10

OK, I've gone through the list of answered questions. There should be no more broken LaTeX caused by this change on the site, but if you find any more, fix it on sight!


9

Note that \tag, \label, and \eqref all play different roles in the process, and you would need to use all three to accomplish your goal. The \tag{x} macro adds an equation number that appears at the right of the equation; it does not create any symbolic name for use with \eqref. That is done through \label{y} which assigns the name y to the tag that is ...


9

Update 2015/03/30: CloudFlare reports that the issues have been resolved. Peter from the MathJax team here. Our CDN provider has been experiencing attacks on some of its DNS servers (see also this thread on the MathJax User Group). This attack leads to erratic DNS resolution failures. We're sorry for the inconvenience this is causing users and we'll send ...


9

Yes, you should edit and/or leave a comment in these cases because Images are fixed size and will display poorly in small browser windows, particularly on phones. MathJax is searchable, although the search functionality is usually not all that useful. MathJax provides a uniform style for typesetting, while the typesetting in images can vary wildly depending ...


8

Typically if MathJax is enabled on the main site, we turn it on for meta too. I'm not at all sure why it wasn't done here. No doubt there was a good reason (or at least an understandable one, such as "we forgot"). But I can't think of any reason that still holds given our current standards, so: $$ \mathrm{late} > \mathrm{never} $$


8

Right click on the LaTeX. Click Show Math As>TeX Commands


8

Yes, mathjax in titles is allowed and even encouraged for better readability/clarity. The main priority is to optimize the user experience for Phys.SE. The HNQ is separate from the Phys.SE and has lower priority. The HNQ is only relevant for a day or two, while the Phys.SE repository is permanent.


7

The problem is with the STIX fonts on your system. STIX comes in several forms. The original form was a set of 29 fonts with names like STIXGeneral, STIXVariants, and STIXSizeOneSym, each in its own font family. Recently, they were repackaged into a set of 5 fonts in families STIX and STIXMath that are designed to work with Microsoft Word. Unfortunately, ...


7

Okay, I have created a synonym tex→mathjax. The 2 tags are not yet merged, so if the community feels strongly about it one way or another, speak up: It can still be undone.


7

No, I don't think it's necessary to use MathJax. In fact, one of our top answerers here doesn't use MathJax at all. This is mostly because answers, and questions, are based in physics and not in maths (though often the maths & physics are intertwined so it's kinda difficult to distinguish them). So if you can explain your question, no matter the subject, ...


7

I think most experienced users of this site would agree that things like "$|\psi>$" often look ugly enough for one's eyes to bleed at least a little. But the minor level of annoyance from looking at that text (or the short time it takes to correct it) has to be balanced against the experience presented to new users when the site tells them that they're ...


6

Generally you should fix easy things like that. Of course, you can also expect posters to learn from their mistakes and not do the same thing in the future.


6

The hat fits me, and also it would fit older users . Everybody ages, and with age memory is not the same, particularly short term memory. I do try to use dollar signs around simple formulae, (since I found out that two $*$ in the paragraph turn everything into italics and destroy the simple formula ! ). The same care I take in spelling and syntax. (syntax ...


6

the mathjax does not support the necessary packages This isn't true - MathJax has full support for the \langle, | and \rangle commands, as well as the combination \left< \right>, which are all you need to typeset bras and kets. However, that said Is it possible to add the necessary requirement to the MathJax system so that we can use the bra &...


5

As of Oct. 23rd, MathJax 2.1 should be in use. I suspect (but haven't verified) that bug fixes to how primes and superscripts are handled may have caused the change in behavior you're seeing. A quick search turns up only 7 posts illustrating this problem - I've listed them below: Galilean relativity in projectile motion Galilean transformation of wave ...


5

Mathjax doesn't seem to allow the siunitx extension (there are a couple of pachages like mhchem which can be enabled)' However, for SI units, I use this userscript. It lets me enclose stuff with the dollar signs via Alt-M, and Alt-S does \:\mathrm{<selected text here>} for SI units. (there also are options for vector fields and double-dollarifying) I'...


5

It works the same way you did it earlier in the answer, when you had a matrix and vector: just write the markup for the matrices one after another. $$\begin{pmatrix}...\end{pmatrix}\begin{pmatrix}...\end{pmatrix}\begin{pmatrix}...\end{pmatrix}$$ They don't all have to be on the same line, but as with any other MathJax expression, you can't have a blank ...


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