Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exterior differential algebras and flat connections on Weyl groups   We study some aspects of noncommutative differential geometry on a finite
Weyl group in the sense of S. Woronowicz, K. Bresser {\it et al.}, and S.
Majid. For any finite Weyl group $W$ we consider the subalgebra generated by
flat connections in the left-invariant exterior differential algebra of $W.$
  For root systems of type $A$ and $D$ we describe a set of relations between
the flat connections, which conjecturally is a complete set.

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The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an