Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A deformation of the Orlik-Solomon algebra   A deformation of the Orlik-Solomon algebra of a matroid M is defined as a
quotient of the free associative algebra over a commutative ring R with 1. It
is shown that the given generators form a Groebner basis and that after
suitable homogenization the deformation and the Orlik-Solomon have the same
Hilbert series as R-algebras. For supersolvable matroids, equivalently fiber
type arrangements, there is a quadratic Groebner basis and hence the algebra is
Koszul

4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
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The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
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The categories of this paper are: patt-sol