@MartinSleziak yes, in theory. This is not the only such tag. Another one is set-theory, standard TL lo.logic and in some sense the worst: linear-algebra where there is no real standard TL tag. (In theory it'd be ra.rings-and-algebras.)
The tag real-analysis could also be mentioned in this regard.
@MartinSleziak the proposal to revise the list of lop-level tags comes up form time to time. A reason against it is that once we start to change it there might be no end to discussion about what should be or should not be there.
In fact I read here that: "I believe it is recommended to always use top level tags whenever possible. Most importantly, top level tags (and a few others like linear-algebra) provide the highest level subject classification at MathOverflow."
So even the FAQ contains the advice on linear-algebra tag.
Due to several discussions on the main site, I am asking this question concerning the best practices for tagging questions on MathOverflow. Unfortunately, the relevant documentation page http://mathoverflow.net/help/tagging does not answer the following questions (except partially questions numbe...
A grumpy plea: can we please not introduce pseudo-LaTeX/MathJax in titles of questions, unless it seems absolutely necessary to interpret certain symbols such as subscripts
Also, I remain unconvinced that $SU(n)$ is better than SU(n) if this is used infrequently in the question, not least because it should arguably be ${\rm SU}(n)$ anyway
Not to mention ${\bf Z}$ versus ${\mathbb Z}$, and so on...
Should question titles, which sometimes intentionally avoid LaTeX math for those who choose faster rendering, be edited to insist upon LaTeX math? A recent instance that prompted my question is "two tetrahedra in R^4." The original title used R^4 to mean $\mathbb{R}^4$, and it was edited, bringin...
One side effect of not using MathJax in the title is that such question can appear in the network-wide hot question lists. (And again, my guess is that the opinion whether this is a good thing or a bad thing will be devided.)
But I agree that there is certainly not much difference between $SU(n)$ and SU(n) or $\mathsf{ZFC}$ and ZFC.
@YemonChoi IIRC it is possible to ping any editor. So perhaps the best way to make that particular user aware of this would be to ping him on that particular post and add a link to the particular post on meta or to your message ni chat (or both).
