Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the radius of spatial analyticity for semilinear symmetric hyperbolic
  systems   We study the problem of propagation of analytic regularity for semi-linear
symmetric hyperbolic systems. We adopt a global perspective and we prove that
if the initial datum extends to a holomorphic function in a strip of radius
(=width) \epsilon_0, the same happens for the solution u(t,.) for a certain
radius \epsilon(t), as long as the solution exists. Our focus is on precise
lower bounds on the spatial radius of analyticity \epsilon(t) as t grows. We
also get similar results for the Schroedinger equation with a real-analytic
electromagnetic potential.

15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th