Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Canonical surfaces associated with projectors in grassmannian sigma
  models   We discuss the construction of higher-dimensional surfaces based on the
harmonic maps of $S^2$ into $CP^{N-1}$ and other grassmannians. We show that
there are two ways of implementing this procedure - both based on the use of
the relevant projectors. We study various properties of such projectors and
show that the Gaussian curvature of these surfaces, in general, is not
constant. We look in detail at the surfaces corresponding to the Veronese
sequence of such maps and show that for all of them this curvature is constant
but its value depends on which mapping is used in the construction of the
surface.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th