Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasicrystalline Pattern Formation in Fluid Substrates and Phyllotaxis   Phyllotactic patterns possess the quasicrystalline structure of the
quasiperiodic Penrose tiling pattern. The author has shown that
quasicrystalline structure of the quasiperiodic Penrose tiling pattern underlie
iterative growth processes such as turbulent(small scale) fluctuations in fluid
flows and round-off error growth in numerical integration schemes.
Selfsimilarity in spatial structure extends down to the level of DNA molecules
in plants . It is possible that plant growth processes may be coupled to the
turbulent fluid environments of air and water respectively in the exterior and
interior of the plant body down to sub-cellular levels resulting in the
spontaneous generation of the quasicrystalline structure in plant growth
pattern.

33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math