Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The moduli space of 8 points on ${\bf P}^1$ and automorphic forms   First we give a complex ball uniformization of the moduli space of 8 ordered
points on the projective line by using the theory of periods of K3 surfaces.
Next we give a projective model of this moduli space by using automorphic forms
on a bounded symmetric domain of type IV which coincides with the one given by
cross ratios of 8 ordered points of the projective line.

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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: cs