Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Four interactions in the sedenion curved spaces   The paper aims to apply the complex-sedenions to explore the field equations
of four fundamental interactions, which are relevant to the classical mechanics
and quantum mechanics, in the curved spaces. J. C. Maxwell was the first to
utilize the quaternions to describe the property of electromagnetic fields.
Nowadays the scholars introduce the complex-octonions to depict the
electromagnetic and gravitational fields. And the complex-sedenions can be
applied to study the field equations of the four interactions in the classical
mechanics and quantum mechanics. Further, it is able to extend the field
equations from the flat space into the curved space described with the
complex-sedenions, by means of the tangent-frames and tensors. The research
states that a few physical quantities will make a contribution to certain
spatial parameters of the curved spaces. These spatial parameters may exert an
influence on some operators (such as, divergence, gradient, and curl),
impacting the field equations in the curved spaces, especially the field
equations of the four quantum-fields in the quantum mechanics. Apparently the
paper and General Relativity both confirm and succeed to the Cartesian academic
thought of `the space is the extension of substance'.

26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess