Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Propagation of singularities for the wave equation on edge manifolds   In this paper, we investigate the geometric propagation and diffraction of
singularities of solutions to the wave equation on manifolds with edge
singularities.

1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int