Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recursive formula for psi^g - lambda_1 psi^{g-1} + ... + (-1)^g lambda_g
  in \Mbar_{g,1}   Mumford proved that psi^g - lambda_1 psi^{g-1} + ... + (-1)^g lambda_g = 0 in
the Chow ring of M_{g,1} [Mum83]. We find an explicit recursive formula for
psi^g - lambda_1 psi^{g-1} + ... + (-1)^g lambda_g in the tautological ring of
\Mbar_{g,1} as a combination of classes supported on boundary strata.

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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph