Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-reproductive and reproductive solutions of some matrix equations   In this paper we analyzed solutions of some complex matrix equations related
to pseudoinverses using the concept of reproductivity. Especially for matrix
equation AXB=C it is shown that Penrose's general solution is actually the case
of the reproductive solution.

29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ