Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SPM Bulletin 36   In addition to a number of new developments in the field, this issue
announces the completion of the special issue of Topology and its Applications,
dedicated to the proceedings of the Fourth Workshop on Coverings, Selections
and Games in Topology, on the occasion of Ljubi\v{s}a D.R. Ko\v{c}inac's 65th
birthday.

19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph