Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some facts about the life and the scientific work of the Belgian
  mathematician Paul Mansion (1844-1919) Centenary Paul Mansion (working paper,
  2019)   In this article, we are interested in the life and scientific work of the
Belgian mathematician Paul Mansion. The year 2019 marks the centenary of his
passing. We bring some new insights into Paul Mansion's work thanks to his
scientific correspondence at the Royal Library in Brussels.

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The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
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The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ex