Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new approach to simple modules for preprojective algebras   The work of the first author on the moment map for representations of quivers
included a classification of the possible dimension vectors of simple modules
for deformed preprojective algebras. That classification was later used to
solve an additive analogue of the Deligne-Simpson problem. The last step in the
proof of the classification involved some general position arguments; here we
give a new approach which avoids such arguments.

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The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
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The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an