Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Explicit construction of effective flux functions for Riemann solutions   For a family of Riemann problems for systems of conservation laws, we
construct a flux function that is scalar and is capable of describing the
Riemann solution of the original system.

23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio