Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From harmonic mappings to Ricci solitons   The paper is devoted to the study of the global geometries of harmonic
mappings and infinitesimal harmonic transformations and presents their
applications to the theory of Ricci solitons.

5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph