Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Apple Doesn't Fall Far From the (Metric) Tree: The Equivalence of
  Definitions   In this paper we prove the equivalence of definitions for metric trees and
for \delta-hyperbolic spaces. We point out how these equivalences can be used
to understand the geometric and metric properties of \delta-hyperbolic spaces
and its relation to CAT(\kappa) spaces.

14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an