Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geometric Proofs of Some Results of Morita   In this note we give geometric formulations and proofs of three results of S.
Morita. These results relate certain two dimensional cohomology classes of
various moduli spaces of curves. We also give a geometric interpretation of a
fourth result of Morita. One motivation of this work is to facilitate the
application of these results in our work (in preparation) on the Arakelov
geometry of moduli spaces of curves.

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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: nlin