# Tag Info

32

Yes. Yes. A thousand times yes. Markdown provides enough methods to draw attention to different parts of text, though bold and italic and even bold italic, not to forget block quotes when one wishes to quote a large section of text, to make using colors via MathJax completely unnecessary. Not only that, but a post written in a rainbow of colours is ...

32

Please note the sarcasm. I don't see any $\color{purple}{\text{problem}}$ with this, adding $\color{red}{\text{c}}\color{orange}{\text{o}}\color{green}{\text{l}}\color{blue}{\text{o}}\color{purple}{\text{r}}$ to text shouldn't reduce $\color{#12dd13}{\text{readibility}}$, nor should any other $\LaTeX$, such as $\boxed{\text{boxes}}$ $\require{cancel}\cancel{... 31 This is supposed to be an all-purpose math site, and obviously not everyone in the world who has a math question knows how to use latex. Although learning latex is not so very hard, it is not trivial either, and assuming that people must have this skill in order to get continued service seems like a clear violation of the intended scope of the site. Also,... 27 Testing alternate way of implementing spoiler $$\require{action} \require{enclose} \toggle{ x\cdot 0 = 0\quad\enclose{roundedbox}{\text{ Click this for derivation }} }{ \begin{array}{rll} x\cdot 0 &= \mathtip{x\cdot 0 + 0}{0 \text{ is additive identity}} \\ &= \mathtip{x\cdot 0 + (x\cdot 0 + -(x\cdot 0))}{ -(x\cdot 0) \text{ is additive inverse ... 24 Disclaimer: I'm part of the MathJax team. Also, this got a bit long. tl;dr Try out NVDA with MathPlayer 4 on Firefox here on math.SE JAWS 13 is a bit old (2011) and the situation of screenreaders with respect to math and the web has changed drastically since then. As already mentioned, JAWS 16 was the first version to introduce direct MathML support but as ... 23 I am delighted that you are considering this issue. I am slightly red/green color blind. It is nearly impossible for me to see the block quotes on math.stackexchange. A light grey background would solve the problem completely for me. A solid or dotted black line along, say, the left the border could serve to distinguish a block quote from piece of computer ... 21 (I'm a new user so I don't have anything to contribute as far as norms here go, but I'm really interested in how to effectively convey information in an accessible way!) Like others have said, the most obvious downside is colorblind people and people using screen readers. Colorblind people will miss information and so you should make sure the color doesn't ... 21 In your special case we can get away with the built-in \triangledown to represent the lines connecting each vertex. We can also make use of \odot to represent each ringed node:$$\begin{array}{ccc}\hline\text{Case}&\text{Coxeter diagram}&\text{Vertex configuration}\\\hline\text{1 ringed node}&{}^{\boldsymbol p}\hspace{-0.15cm}{\Huge\triangledown}... 20 Colored text can be useful. I can only think of one example at the moment, which is for highlighting correspondences between different parts of a piece of text, like so:$\frac{d}{dx} (\color{red}{x^3} + \color{blue}{x^2}) = \color{red}{3x^2} + \color{blue}{2x}Colored text is not useful for merely emphasizing or highlighting a bit of text; italics or bold ... 18 There are three approaches for line breaks. As pointed out in the comments, Approaches 2 and 3 produce the same HTML output when rendered on the page. Approach 1: Press "Enter" twice Output: Hi Bye Code: Hi Bye Approach 2: Two spaces at end of line Output: Hi Bye Code: Hi Bye There are two spaces after "Hi." That is, the text looks like: Hi&... 16 Although there are some great comments above, one thing no one has mentioned is people who use assistive technology like screen readers. Having the mathematics clearly marked as mathematics (as oppose to "fake" mathematics using other HTML tricks) makes it much easier to properly voice the mathematics for screen readers. Although few screen readers ... 15 Some decide instead of typing the actual text of the question, typesetting formulae with LATEX and using plotting software, it would be better for them to avoid the effort Okay, hold on. You seem to be under the impression that computer typesetting and plotting is easy. Something anyone who uses this site should have in their skillset. Do you really expect ... 13 Simple solution: don't abuse MathJax to colour your text. 12 Since my comment under the other answer got about three times more votes than the answer, maybe it's worth converting it into a full answer: The correct way would be, as far as I can tell, to convert the brackets into opening and closing delimiters through the use of \mathopen and \mathclose: \forall x \in \mathopen{]} -1, 1 \mathclose{[}, f(x) > 0 $$\... 11 You can use \limits to get that as in \sum\limits_{i=n}^\mathbb{N}\frac1{i^2}. However, this severely messes with the interline spacing. code: \sum\limits_{i=n}^\mathbb{N}\frac1{i^2} You can also use \displaystyle as in \displaystyle\sum_{i=n}^\mathbb{N}\frac1{i^2}. However, this really messes with interline spacing. code: \displaystyle\sum_{i=n}^\... 11 (I've never used Meta before -- I noted there's no answer yet, but a lot of comments, so I hope I'm not doing something wrong) To first give an example of what I would consider good coloring; I like the explanation of Fourier Transform, on betterexplained and technically copied from altdevblogaday): To be fair, he could have made it a little easier for ... 11 You can do it, but you need to use large squares and hide their height and depth using \smash. It helps to use a definition or two. Here is one approach: \def\smallstrut{\Space{0em}{.6em}{.2em}} \def\cbox#1{\textstyle\smash{\color{#1}{\Rule{1em}{.8em}{.2em}}}\smallstrut} \begin{smallmatrix} \cbox{red}\cbox{teal}\cbox{green}\cbox{blue}\\ \cbox{red}\cbox{... 11 Use mathjax for mathematics, not for text formatting. The mathjax italics happen because mathjax thinks "abcde" is just a string of variables. 10 As suggested in other posts about this issue, you can use <sup> or <sub>. It is probably not optimal, but at least doable within the limitations of the software. See: How do I use a small font size in questions and answers? You can also support a related feature requests Allow the <small> tag and Markdown extension for really small tiny ... 10 You are not supposed to write a greeting at the start of the question. There is a script in place that removes certain common forms of greetings (or at least what appears to be like one, there are rare false positives). Of course there are ways to fool the script, but you should not. 9 I don't there's been any recent change; this is how things have always worked. To get a single line break, put two spaces at the end of the line - for example, **Theorem** adsfdf *proof*: asdfdsaf produces Theorem adsfdf proof: asdfdsaf 9 Another possibility is to use \smash to stop MathJAX from adjusting the line spacing to accomodate mathematical expressions:$$\begin{align} \smash{\sum_{i=1}^n}F_{2i-1}&=F_1+F_3+F_5+\cdots+F_{2n-1}\\ &=1+2+5+\cdots+F_{2n-1}\\ &=F_{2n}\\ \end{align} \begin{align} \smash{\sum_{i=1}^n}F_{2i-1}&=F_1+F_3+F_5+\cdots+F_{2n-1}\\ &=1+2+5+... 9 Plain\mathrm{\TeX}$defines \mathcode$="405B \mathcode$="505D \delcode$="05B302 \delcode$="05D303 and$\mathrm{\LaTeX}$does essentially the same. One could get extensible French brackets by something like \def\lfb{\delimiter"405D303 } \def\rfb{\delimiter"505B302 } Compiling the following file \def\lfb{\delimiter"405D303 } \def\rfb{\delimiter"... 9 As far as I know, math SE does not have a formal style guide so (as the comments to your question indicate) there is no one correct answer to where the punctuation should go. If the correctness is your main concern then I would suggest consulting a style guide and, should anyone then question your decision, you can point them to the style guide as your ... 9 So it seems that tables are now enabled here. Here is a CW-answer for testing how they work with MathJax. A header Another header Limit$\lim\limits_{x\to\infty} f(x)$Matrix$\begin{pmatrix}1&2\\0&1\end{pmatrix}$Cardinals$\mathfrak c^{\aleph_0}=\mathfrak c$More tests Mathjax Equation with a tag x^2+y^2=z^2 \tag{1} \end{... 8 If you want to write text in math-mode then use \text{...} or variants thereof for example:$\text{This is some text with default font.}\textrm{This is some text with specified font, which happens to coincide with the default.}\textsf{This is some text in another font.}\textbf{This is some text in bold.}\text{This is some text with default ...

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To reiterate what was said in a comment, that's not really possible, except in a way on mobile. It is possible though to hide text as a spoiler. Like this (hover over it to show, click to fix it, on mobile one has to click but this is even indicated). The syntax is >! Text That is sometimes used, but it is not really convenient as it takes up the full ...

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The following: $$\left.\begin{array}{c} 5\\ 6 \end{array} \right] \quad 2\quad \left[\begin{array}{c} 1\\ 2 \end{array}\right.$$ is produced by $$\left.\begin{array}{c} 5\\ 6 \end{array} \right] \quad 2\quad \left[\begin{array}{c} 1\\ 2 \end{array}\right.$$ You can make the number smaller and/or add space by including blank lines, e.g. \left.\begin{...

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This isn't part of MathJax or LaTeX; it's part of Markdown, which is the Stack Exchange way of formatting posts in general (e.g. italicizing the name Markdown, or making formatted links). What you stumbled upon is the blockquote; the linked Help Center article contains almost all other options available to you.

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