Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extra-large metrics   An extra large metric is a spherical cone metric with all cone angles greater
than 2 pi and every closed geodesic longer than 2pi. We show that every
two-dimensional extra large metric can be triangulated with vertices at cone
points only. The argument implies the same result for Euclidean and hyperbolic
cone metrics, and can be modified to show a similar result for
higher-dimensional extra-large metrics. The extra-large hypothesis is
necessary.

6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg