Currently, there exist a tag divergence, about which I'd like to know your opinion:
the tag has no usage guidance and no tag wiki. This means that users cannot know whether this tag is dedicated to "divergence" as opposed to "convergence" (of series, sequences, integrals), or rather to "divergence" as in "divergence of a vector field". In fact, this tag is currently used in both situations (with the majority of the questions using the first meaning)...
...which brings us to: is it not redundant to use this tag for "divergence as opposed to convergence", given that we have the vastly more used tag convergence (8656 vs. 104 tagged questions for each)?
I suggest removing this tag altogether and retagging the questions about the divergence of vector fields with vector-analysis.