Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hyperbolic Structures on 3-manifolds, I: Deformation of acylindrical
  manifolds   This is the first in a series of papers showing that Haken manifolds have
hyperbolic structures; this first was published, the second two have existed
only in preprint form, and later preprints were never completed. This eprint is
only an approximation to the published version, which is the definitive form
for part I, and is provided for convenience only. All references and quotations
should be taken from the published version, since the theorem numbering is
different and not all corrections have been incorporated into the present
version.
  Parts II and III will be made available as eprints shortly.

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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: stat