Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An upwind lattice Boltzmann scheme   A lattice Boltzmann scheme that is close to pure upwind, low diffusive and
entropy satisfying Engquist-Osher scheme has been formulated for hyperbolic
scalar conservation laws. A model for source terms, with scalar conservation
laws, is introduced to remove the numerical imbalance between convection and
source terms.

8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con