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As long as you don't submit the post, I don't see any harm in using the preview functionality of Stack Exchange to test your LaTeX code. But see Concerns about MathJax in proposed new SE editor – at the moment it's unclear whether that will continue to work. Otherwise, we have the Formatting Sandbox which can be used for this kind of stuff. Note that the ...


It's possible to analyze this with help of the Stack Exchange Data Explorer if you know a bit of SQL. The procedure is as follows: Split the body of the post into several chunks, splitting on the \ character Check which alphabetical characters appear at the beginning of each chunk Luckily, all posts starts with <p> so the first chunk, which is not a ...


One lazy fix is to use phantoms: Expanding the decimal expansions lines things up: $$\begin{align} 124\phantom{.000}& \\ \underline{+\quad 53.258}& \\ 177\phantom{.000}& \end{align}$$ $$\begin{align} 124\phantom{.000}& \\ \underline{+\quad 53.258}& \\ 177\phantom{.000}& \end{align}$$ A more correct way is to put the & (alignment) ...


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.


On the Activity tab of your user page, click on Bounties (in the string of buttons below the reputation graph and Newest/Next Badge information). That string starts with Summary and ends with Votes, and Bounties falls just past the halfway mark. In the Bounties mode you have three submodes (buttons to the right side of the desktop page), Active, Offered, ...


Here is a SEDE query: Answers by a specific user which received bounties. By changing the uid parameter you can check which user are you looking at. Of course, you can refine the query using further criteria. Keep in mind that the data in SEDE are only updated once a week.


As a moderator and many others have noted, comments are ephemeral in the StackExchange scheme of content. So avoid leaving important content only in Comments. Significant (non-tangential) ideas should make their way into Answers or (in many cases) into to the body of the Question through appropriate edits. What is being said, rather than who says it, is ...


Currently it is not possible. However, exact symbol matches are supposed to be prioritized to the very top of search results. As a result, in your complex number example, it should first list as many $i^2 = -1$ as possible before other possibilities such as $n^2 = -1$. However, this gets tricky when you enter a larger expression as query where only small ...


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