Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A TCSP-like decidable constraint language generalising existing cardinal
  direction relations   We define a quantitative constraint language subsuming two calculi well-known
in QSR (Qualitative Spatial Reasoning): Frank's cone-shaped and
projection-based calculi of cardinal direction relations. We show how to solve
a CSP (Constraint Satisfaction Problem) expressed in the language.

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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: physics
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The categories of this paper are: chem-ph