Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Fast Method for Determining Local Properties of Striped Patterns   From the striped coats of zebras to the ripples in windblown sand, the
natural world abounds with locally banded patterns. Such patterns have been of
great interest throughout history, and, in the last twenty years, scientists in
a wide variety of fields have been studying the patterns formed in
well-controlled experiments that yield enormous quantities of high-precision
data. These experiments involving phenomena as diverse as chemical reactions in
shallow layers, thermal convection in horizontal fluid layers, periodically
shaken layers of sand, and the growth of slime mold colonies often display
patterns that appear qualitatively similar. Methods are needed to characterize
in a reasonable amount of time the differences and similarities in patterns
that develop in different systems, as well as in patterns formed in one system
for different experimental conditions. In this Letter, we introduce a novel,
fast method for determining local pattern properties such as wavenumber,
orientation, and curvature as a function of position for locally striped
patterns.

18
The categories of this paper are: econ
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg