Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Real hypersurfaces with pseudo-parallel normal Jacobi operator in
  complex two-plane Grassmannians   The objective of the present paper is to prove the non-existence of real
hypersurface with pseudo-parallel normal Jacobi operator in complex two-plane
Grassmannians. As a corollary, we show that there does not exist any real
hypersurface with semi-parallel or recurrent normal Jacobi operator in complex
two-plane Grassmannians. This answers a question considered in [Monatsh Math,
172 (2013), 167-178] in negative.

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The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th