Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on two classes of permutation polynomials over finite fields   Permutation polynomials over finite fields have taken an important role in
vast areas in mathematics as well as engineering.
  Recently, Tu et al. gave some classes of complete permutation polynomials
over finite fields of even characteristic.
  In this paper, we give some properties based on a work of Akbary et al. With
the help of the properties, we give extensions of Tu et el.'s results to
arbitrary characteristic.

16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn