Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What can we expect of the heat in a thin plate ?   We illustrate, with a simple example of domain perturbation problem, how
Linear Algebra can be applied to determine the behavior of a family of partial
differential equations posed in a thin rectangular domain. (In portuguese)

35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
1
The categories of this paper are: cs