Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on non-homogeneous hyperbolic operators with low-regularity
  coefficients   In this paper we obtain an energy estimate for a complete strictly hyperbolic
operator with second order coefficients satisfying a log-Zygmund-continuity
condition with respect to $t$, uniformly with respect to $x$, and a
log-Lipschitz-continuity condition with respect to $x$, uniformly with respect
to $t$.

31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat