Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimates for the Initial Coefficients of Bi-univalent Functions   A bi-univalent function is a univalent function defined on the unit disk with
its inverse also univalent on the unit disk. Estimates for the initial
coefficients are obtained for bi-univalent functions belonging to certain
classes defined by subordination and relevant connections with earlier results
are pointed out.

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The categories of this paper are: stat
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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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: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: eess