Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extremal sequences for the Bellman function of the dyadic maximal
  operator   We give a characterization of the extremal sequences for the Bellman function
of the dyadic maximal operator.In fact we prove that they behave approximately
like eigenfunctions of this operator for a specific eigenvalue.

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The categories of this paper are: cs
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an