Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Algebraic Structure of Second Order Symmetric Tensors in
  5-Dimensional Space-times   A new approach to the algebraic classification of second order symmetric
tensors in 5-dimensional space-times is presented. The possible Segre types for
a symmetric two-tensor are found. A set of canonical forms for each Segre type
is obtained. A theorem which collects together some basic results on the
algebraic structure of the Ricci tensor in 5-dimensional space-times is also
stated.

13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th