Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic domain-walls and the relaxation method   The relaxation method used to solve boundary value problems is applied to
study the variation of the magnetization orientation in several types of domain
walls that occur in ferromagnetic materials. The algorithm is explained and
applied to several cases: the Bloch wall in bulk magnetic systems, the radial
wall in cylindrical wires and the N\'eel wall in thin films

9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas