Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear Connections and Description of Photon-like Objects   This paper aims to present a general idea for description of spatially finite
physical objects with a consistent nontrivial translational-rotational
dynamical structure and evolution as a whole, making use of the mathematical
concepts and structures connected with the Frobenius
integrability/nonintegrability theorems given in terms of distributions on
manifolds with corresponding curvature defined by the Nijenhuis operator. The
idea is based on consideration of {\it nonintegrable} subdistributions of some
appropriate completely integrable distribution (differential system) on a
manifold and then to make use of the corresponding curvatures as generators of
measures of interaction, i.e. of energy-momentum exchange among the physical
subsystems mathematically represented by the nonintegrable subdistributions.
The concept of photon-like object is introduced and description of such objects
in these terms is given.

4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin