Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Compactification of the Space of Parametrized Rational Curves in
  Grassmannians   We construct an explicit compactification for the space of parametrized
rational curves in a Grassmanian by a nonsingular projective variety such that
the boundary is a divisor with simple normal crossings. This compactification
is obtained by blowing up a Quot scheme successively along appropriate
subschemes.

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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: eess
3
The categories of this paper are: physics
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
27
The categories of this paper are: comp-gas