Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperelliptic Threefolds with group $D_4$, the Dihedral group of order 8   We give a simple construction for the hyperelliptic threefolds with group
$D_4$, thus completing the classification of hyperelliptic threefolds.

35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat