Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A nonexistence result on harmonic diffeomorphisms between punctured
  spaces   In this paper, we will prove a result of nonexistence on harmonic
diffeomorphisms between punctured spaces. In particular, we will given an
elementary proof to the nonexistence of rotationally symmetric harmonic
diffeomorphisms from the punctured Euclidean space onto the punctured
hyperbolic space.

15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th