Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Minimal free multi models for chain algebras   Let R be a local ring and A a connected differential graded algebra over R
which is free as a graded R-module. Using homological perturbation theory
techniques, we construct a minimal free multi model for A having properties
similar to that of an ordinary minimal model over a field; in particular the
model is unique up to isomorphism of multialgebras. The attribute multi refers
to the category of multicomplexes.

29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess