Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Substitution tilings with statistical circular symmetry   Two new series of substitution tilings are introduced in which the tiles
appear in infinitely many orientations. It is shown that several properties of
the well-known pinwheel tiling do also hold for these new examples, and, in
fact, for all substitution tilings showing tiles in infinitely many
orientations.

29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg