Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Explicit construction of the complex structure on the six dimensional
  sphere   New proof of existence of the novel complex structure on the six-sphere,
followed by an explicit computation of its underlying integrable almost complex
tensor by the aid of inner automorphisms of the octonions, is exhibited. Both
are elementary and self-contained however the size and complexity of the
emerging almost complex tensor field on the six-sphere is perplexing.

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat