Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hypergeometric Groups and Dynamics on K3 Surfaces   A hypergeometric group is a matrix group modeled on the monodromy group of a
generalized hypergeometric differential equation. This article presents a
fruitful interaction between the theory of hypergeometric groups and dynamics
on K3 surfaces by showing that a certain class of hypergeometric groups and
related lattices lead to a lot of K3 surface automorphisms of positive entropy,
especially such automorphisms with Siegel disks.

9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat