Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the fourth order Cattaneo equation of heat conduction with memory   The well known heat equation with finite speed of propagation proposed by
Cattaneo is obtained by a more general fourth order PDE when a certain (small)
parameters is put equal to zero. It seems that this fourth order equation has
been essentially overlooked in the literature, in particular when it is subject
to non homogeneous boundary conditions. In this paper we examine its well
posedness and the asymptotic behavior when certain coefficients tend to
singular values.

12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th