Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An example of an almost greedy uniformly bounded orthonormal basis for
  $L_p([0,1])$   We construct a uniformly bounded orthonormal almost greedy basis for
$L_p([0,1])$, $1<p<\infty$. The example shows that it is not possible to extend
Orlicz's theorem, stating that there are no uniformly bounded orthonormal
unconditional bases for $L_p([0,1])$, $p\not=2$, to the class of almost greedy
bases.

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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
14
The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg