Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Approach to Quantising Space-Time: II. Quantising on a Category of
  Sets   In a recent paper by the author, a new approach was suggested for quantising
space-time, or space. This involved developing a procedure for quantising a
system whose configuration space--or history-theory analogue--is the set of
objects in a (small) category $\Q$. In the present paper, we show how this
theory can be applied to the special case when $\Q$ is a category of sets. This
includes the physically important examples where $\Q$ is a category of causal
sets, or topological spaces.

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The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph