Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hamiltonian stability and index of minimal Lagrangian surfaces of the
  complex projective plane   We show that the Clifford torus and the totally geodesic real projective
plane RP^2 in the complex projective plane CP^2 are the unique Hamiltonian
stable minimal Lagrangian compact surfaces of CP^2 with genus less than or
equal to 4, when the surface is orientable, and with Euler characteristic
greater than or equal to -1, when the surface is nonorientable. Also we
characterize RP^2 in CP^2 as the least possible index minimal Lagrangian
compact nonorientable surface of CP^2.

18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol