Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pre-Lagrangian Submanifolds in Contact Manifolds   In this paper we prove that there does not exists any closed Pre-Lagrangian
submanifolds in any closed contact manifolds by using the $J-$holomorphic
curves and Gromov's nonlinear Fredholm alternative.

27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: stat
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
19
The categories of this paper are: eess
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The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: nlin