Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mode volume of electromagnetic resonators: let us try giving credit
  where it is due   The mode volume is a very important figure of merits, which transversally
arouse the physics and applications of electromagnetic cavities. Its modern
definition was not obtained simply, and I try to briefly summarize the
evolution of ideas. I also incidentally address considerations on scientific
publishing policy in the epilogue.

36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg