Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interpolation and sampling for analytic selfmappings of the disc   Two different problems are considered here. First, a version of Schwarz-Pick
Lemma for $n$ points leads to an interpolation problem for analytic functions
from the disc into itself, which may be considered as a particular case of the
classical Nevanlinna-Pick interpolation problem. Second, a characterization of
sampling sequences for this class of functions is given.

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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
10
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: mtrl-th
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The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
22
The categories of this paper are: chao-dyn