Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-computable impressions of computable external rays of quadratic
  polynomials   We discuss computability of impressions of prime ends of compact sets. In
particular, we construct quadratic Julia sets which possess explicitly
described non-computable impressions.

9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
1
The categories of this paper are: cs
19
The categories of this paper are: eess