Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gyrokinetic resonant theory of low frequency electromagnetic
  perturbation   It's pointed out that the traditional gyrokinetic theory dealing with low
frequency electromagnetic perturbation violates the near identity
transformation, which is supposed to be obeyed by Lie perturbed transformation
theory, if resonance happens between \omega and k\cdot v. A modification is
given to overcome this problem by not requiring all components in the first
order Lagrangian 1-form equaling zero. A numerical example is given as an
application of the new theory.

7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg