Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotationally symmetric tilings with convex pentagons belonging to both
  the Type 1 and Type 7   Rotationally symmetric tilings by a convex pentagonal tile belonging to both
the Type 1 and Type 7 families are introduced. Among them are spiral tilings
with two- and four-fold rotational symmetry. Those rotationally symmetric
tilings are connected edge-to-edge and have no axis of reflection symmetry.

8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an