Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A combinatorial characterisation of embedded polar spaces   Some classical polar spaces admit polar spaces of the same rank as embedded
polar spaces (often arisen as the intersection of the polar space with a
non-tangent hyperplane). In this article we look at sets of generators that
behave combinatorially as the set of generators of such an embedded polar
space, and we prove that they are the set of generators of an embedded polar
space.

23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat