Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CPN Models in General Coordinates   An analysis of CPN models is given in terms of general coordinates or
arbitrary interpolating fields.Only closed expressions made from simple
functions are involved.Special attention is given to CP2 and CP4. In the first
of these the retrieval of stereographic coordinates reveals the hermitian form
of the metric. A similar analysis for the latter case allows comparison with
the Fubini-Study metric.

37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph