Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A correction on Shiloach's algorithm for minimum linear arrangement of
  trees   More than 30 years ago, Shiloach published an algorithm to solve the minimum
linear arrangement problem for undirected trees. Here we fix a small error in
the original version of the algorithm and discuss its effect on subsequent
literature. We also improve some aspects of the notation.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn