Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Projective-umbilic points of circular real hypersurfaces in $\mathbb
  C^2$   We show that the boundary of any bounded strongly pseudoconvex complete
circular domain in $\mathbb C^2$ must contain points that are exceptionally
tangent to a projective image of the unit sphere.

27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con