Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lie group classification and conservation laws of a class of hyperbolic
  equations   A new method for the Lie group classification of differential equations is
proposed. It is based of the determination of all possible cases of linear
dependence of certain indeterminate appearing in the determining equations of
symmetries of the equation. The method is simple and systematic and applied to
a family of hyperbolic equations. Moreover, as the said family contains several
known equations with important physical applications, low-order conservation
laws of some relevant equations from the family are computed, and the results
obtained are discussed with regard to the symmetry integrability of a
particular class from the underlying family of hyperbolic equations.

36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess