Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A co-dimensional 3 sub-Riemannian structure on Gromoll-Meyer exotic
  sphere   We construct a co-dimension $3$ completely non-holonomic sub-bundle on the
Gromoll-Meyer exotic $7$ sphere based on its realization as a base space of a
Sp(2)-principal bundle with the structure group Sp(1). The same method is valid
for constructing a co-dimension 3 completely non-holonomic sub-bundle on the
standard 7 sphere (or more general on a $4n+3$ dimensional standard sphere). In
the latter case such a construction based on the Hopf bundle is well-known. Our
method provides an alternated simple proof for the standard sphere
$\mathbb{S}^7$.

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The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat
1
The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex