Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fractal dimensions of a green broccoli and a white cauliflower   The fractal structures of a green broccoli and a white cauliflower are
investigated by box-counting method of their cross-sections. The capacity
dimensions of the cross-sections are $1.78 \pm 0.02$ for a green broccoli and
$1.88 \pm 0.02$ for a white cauliflower, and both are independent of their
directions. From the results we predict that the capacity dimensions of the
bulks are about 2.7 for a green broccoli and $2.8.$ for a white cauliflower.
  The vertical cross-sections of the two plants are modeled into self-similar
sets of triangular and rectangular trees.
  We discuss the conditions of the fractal objects in the model trees.

15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th