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Jul 7, 2019 at 7:05 comment added Martin Sleziak @LSpice Thanks for letting me know. I have edited the post - feel free to edit it further, if needed. (After all, it is community wiki.)
Jul 7, 2019 at 7:04 history edited Martin Sleziak CC BY-SA 4.0
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Jul 7, 2019 at 6:44 history edited Martin Sleziak CC BY-SA 4.0
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Jul 5, 2019 at 2:51 comment added LSpice \DeclareMathOperator{rk}{rank} and \newcommand{Lim}{…} don't work in LaTeX (with default catcodes), but the other two (with or without braces around the command name) work just fine in LaTeX.
Jun 30, 2019 at 10:45 comment added Martin Sleziak To add to Hagen von Eitzen's comment, I did not find posts with \let in the title. There were two questions where \let was in the title, by it was later edited away: chat.stackexchange.com/transcript/88939/2019/6/30
Jun 30, 2019 at 2:55 comment added Hagen von Eitzen Also block \let?
Jun 27, 2019 at 17:24 comment added Asaf Karagila Mod @celtschk: Yes, but there's not as much math on meta for this to be a serious problem. It would be reasonable to allow these on titles on meta, and we should just make sure that the usage is not... trollish.
Jun 27, 2019 at 17:23 comment added celtschk @AsafKaragila: OK, so on the main site it can be blacklisted unconditionally, but the problem of course exists on the meta site as well.
Jun 27, 2019 at 13:14 comment added Asaf Karagila Mod @celtschk: Blacklisting is not only different for different websites, it is also different between a site and its meta. If someone wants to ask, on the main site, a question where \DeclareMathOperator is in the title, not in an "active capacity", then this question is in fact off topic.
Jun 20, 2019 at 11:19 history edited Martin Sleziak CC BY-SA 4.0
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Jun 20, 2019 at 11:09 comment added Martin Sleziak In any case, I think that such environments are rather rarely used edge cases. (Which is probably the reason that they have not even been blacklisted in the titles. Blacklisting equation environment probably makes sense if $$..$$ is blacklisted - but as hardly anybody would use them, they were probably not worth blacklisting.)
Jun 20, 2019 at 11:09 comment added Martin Sleziak @celtschk I believe that stuff such as \begin{equation}x^2+y^2=z^2\end{equation} or \begin{pmatrix} \lambda & 1 & 0 \\ 0 & \lambda & 1 \\ 0 & 0 & \lambda \\ \end{pmatrix} is a way to get MathJax without dollar signs. However, I think that most users include dollar. Just as an experiment, I have tried whether I'd be allowed to used them in a title (after the test I have immediately deleted the question).
Jun 20, 2019 at 10:46 comment added celtschk Given that double dollar signs are already blacklisted, I guess it would be as simple as checking that there's an odd number of dollar signs preceding it (are there any ways to trigger MathJax without a dollar sign?)
Jun 20, 2019 at 10:41 comment added Martin Sleziak Still, pointing out that blacklisting only inside MathJax could be reasonable is a very good point.
Jun 20, 2019 at 10:41 comment added Martin Sleziak @celtschk AFAICT, different sites has different blacklists for titles, tags, post bodies. Regarding blacklisting only inside MathJax, perhaps somebody with more experience in regular expressions can tell how difficult it would be. However, I have difficulties imagining on-topic question on Mathematics Stack Exchange where "\DeclareMathOperator" would be needed in the title - and even if there are such questions, I think that very likely changing "\DeclareMathOperator" to "DeclareMathOperator" would not decrease readability that much.
Jun 20, 2019 at 10:37 comment added celtschk But you might want to ask about those macros, and then use the macro names in the title for that purpose. I think blacklisting would prevent that as well. Unless it is possible to blacklist them only inside MathJax expressions, I'm against blacklisting. (BTW, is blacklisting site specific? Because blacklisting any LaTeX macro names in titles would be terrible for tex.SE)
Jun 19, 2019 at 12:41 history edited Martin Sleziak CC BY-SA 4.0
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Jun 19, 2019 at 11:44 history edited Martin Sleziak CC BY-SA 4.0
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Jun 19, 2019 at 8:07 history edited Martin Sleziak CC BY-SA 4.0
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S Jun 19, 2019 at 8:01 history answered Martin Sleziak CC BY-SA 4.0
S Jun 19, 2019 at 8:01 history made wiki Post Made Community Wiki by Martin Sleziak