Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reconstruction Algebras of Type D (II)   This is the third in a series of papers which give an explicit description of
the reconstruction algebra as a quiver with relations; these algebras arise
naturally as geometric generalizations of preprojective algebras of extended
Dynkin quivers. This paper deals with dihedral groups G=D_{n,q} which have rank
2 special CM modules. We show that such reconstruction algebras are described
by combining a preprojective algebra of extended type D with some
reconstruction algebra of type A.

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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: q-alg