Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A direct proof that the category of 3-computads is not cartesian closed   We prove by counterexample that the category of 3-computads is not cartesian
closed, a result originally proved by Makkai and Zawadowski. We give a
3-computad B and show that the functor _ x B does not have a right adjoint, by
giving a coequaliser that is not preserved by it.

21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex