I am not sure if this is the right place to post this question.
First, how to choose the tags when asking a question? If one does not know which tag to use?
Second, what is the difference between tags that look the same? E.g.,
- elementary-set-theory and set-theory?
- probability and probability-theory?
- riemann-zeta and zeta-functions?
Now I do not know which tag to use either.