Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Twelve shear surface waves guided by clamped/free boundaries in
  magneto-electro-elastic materials   It is shown that surface waves with twelve different velocities in the cases
of different magneto-electrical boundary conditions can be guided by the
interface of two identical magneto-electro-elastic half-spaces. The plane
boundary of one of the half-spaces is clamped while the plane boundary of the
other one is free of stresses. The 12 velocities of propagation of these
surface waves are obtained is explicit forms. It is shown that the number of
different surface wave velocities decreases from 12 to 2 if the
magneto-electro-elastic material is changed to a piezoelectric material.

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The categories of this paper are: chem-ph
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas