Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proper Weyl Collineations in Kantowski-Sachs and Bianchi Type III
  Space-Times   A study of proper Weyl collineations in Kantowski-Sachs and Bianchi type III
space-times is given by using the rank of the 6X6 Weyl matrix and direct
integration techniques. Studying proper Weyl collineations in each of the above
space-times, it is shown that there exists no such possibility when the above
space-times admit proper Weyl collineations.

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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex