Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the classification of automorphisms of trees   We identify the complexity of the classification problem for automorphisms of
a given countable regularly branching tree up to conjugacy. We consider both
the rooted and unrooted cases. Additionally, we calculate the complexity of the
conjugacy problem in the case of automorphisms of several non-regularly
branching trees.

8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin