Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Novel Position-Space Renormalization Group for Bond Directed Percolation
  in Two Dimensions   A new position-space renormalization group approach is investigated for bond
directed percolation in two dimensions. The threshold value for the bond
occupation probabilities is found to be $p_c=0.6443$. Correlation length
exponents on time (parallel) and space (transverse) directions are found to be
$\nu_\parallel=1.719$ and $\nu_\perp=1.076$, respectively, which are in very
good agreement with the best known series expansion results.

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The categories of this paper are: q-alg
9
The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
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The categories of this paper are: q-fin
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph