Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: In Memoriam: James Earl Baumgartner (1943-2011)   James Earl Baumgartner (March 23, 1943 - December 28, 2011) came of age
mathematically during the emergence of forcing as a fundamental technique of
set theory, and his seminal research changed the way set theory is done. He
made fundamental contributions to the development of forcing, to our
understanding of uncountable orders, to the partition calculus, and to large
cardinals and their ideals. He promulgated the use of logic such as
absoluteness and elementary submodels to solve problems in set theory, he
applied his knowledge of set theory to a variety of areas in collaboration with
other mathematicians, and he encouraged a community of mathematicians with
engaging survey talks, enthusiastic discussions of open problems, and friendly
mathematical conversations.

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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
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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: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin