Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Maxwell's equations in media as a contact Hamiltonian vector field and
  its information geometry -- An approach with a bundle whose fiber is a
  contact manifold   It is shown that Maxwell's equations in media without source can be written
as a contact Hamiltonian vector field restricted to a Legendre submanifold,
where this submanifold is in a fiber space of a bundle and is generated by
either electromagnetic energy functional or co-energy functional. Then, it
turns out that Legendre duality for this system gives the induction oriented
formulation of Maxwell's equations and field intensity oriented one. Also,
information geometry of the Maxwell fields is introduced and discussed.

31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn