Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Limits of Chow groups, and a new construction of
  Chern-Schwartz-MacPherson classes   We define an `enriched' notion of Chow groups for algebraic varieties,
agreeing with the conventional notion for complete varieties, but enjoying a
functorial push-forward for arbitrary maps. This tool allows us to glue
intersection-theoretic information across elements of a stratification of a
variety; we illustrate this operation by giving a direct construction of
Chern-Schwartz-MacPherson classes of singular varieties, providing a new proof
of an old (and long since settled) conjecture of Deligne and Grothendieck.

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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: cond-mat