Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on the box dimension of degenerate foci   We study polynomial planar systems with singularity of focus type without
characteristic directions. Simple and natural transformation of weak focus has
been used to obtain such degenerate focus. We compute the box dimension of a
spiral trajectory, and show connection to cyclicity of the system under a
perturbation.

15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: stat