Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spanning forest polynomials and the transcendental weight of Feynman
  graphs   We give combinatorial criteria for predicting the transcendental weight of
Feynman integrals of certain graphs in $\phi^4$ theory. By studying spanning
forest polynomials, we obtain operations on graphs which are weight-preserving,
and a list of subgraphs which induce a drop in the transcendental weight.

34
The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga