Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decompositions of even hypercubes into cycles whose length is a power of
  two   If $n$ is even, the $n$-dimensional hypercube can be decomposed into
edge-disjoint cycles of length $2^i$ for every value of $i$ from $2$ to $n$.

6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph