Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Profiles of James Peebles, Michel Mayor, and Didier Queloz: 2019 Nobel
  Laureates in Physics   The 2019 Nobel Prize in Physics honors three pioneering scientists for their
fundamental contributions to basic cosmic questions - Professor James Peebles
(Princeton University), Michel Mayor (University of Geneva), and Didier Queloz
(University of Geneva and the University of Cambridge) - "for contributions to
our understanding of the evolution of the universe and Earth's place in the
cosmos," with one half to James Peebles "for theoretical discoveries in
physical cosmology," and the other half jointly to Michel Mayor and Didier
Queloz "for the discovery of an exoplanet orbiting a solar-type star." We
summarize the historical and scientific backdrop to this year's Physics Nobel.

23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph