Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Complexity of natural numbers   This is the English version of the paper: "Complejidad de los n\'umeros
naturales", Gaceta de la Real Sociedad Matem\'atica Espa\~nola 3 (2000)
230--250. In this paper, several conjectures about the complexity of natural
numbers are proposed. In a recent joint paper with H. Altman "Integer
Complexity, stability, and self-similarity" arXiv:2111.00671, we resolve the
last of these conjectures. This is why I consider its translation useful now as
a reference.

6
The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics