Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct proof of Mckay Correspondence and the representations of finite
  subgroups of $\operatorname{SO}(4)$   The classic Mckay correspondence gives a connection between finite subgroups
of $\operatorname{SU}(2)$ and the simply-laced Dynkin diagrams. In this
article, a direct proof is presented. The bipartite structure of the Mckay
diagrams is introduced. After that, the similar method can be used on finite
subgroups of $\operatorname{SO}(4)$, we get a edges-coloured graph. We finally
get some applications.

8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph