Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Birman exact sequence for the Torelli subgroup of Aut(F_n)   We develop an analogue of the Birman exact sequence for the Torelli subgroup
of Aut(F_n). This builds on earlier work of the authors who studied an analogue
of the Birman exact sequence for the entire group Aut(F_n). These results play
an important role in the authors' recent work on the second homology group of
the Torelli group.

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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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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-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph