Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Double Categorical View on Representations of Etendues   In this paper we introduce a description of ordered groupoids as a particular
type of double categories. This enables us to turn Lawson's correspondence
between ordered groupoids and left-cancellative categories into a
biequivalence. We use this to identify which ordered functors are maps of sites
in the sense that they give rise to geometric morphisms between the induced
sheaf categories, and establish a Comparison Lemma for maps between Ehresmann
sites.

28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat