Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On extremal double circulant self-dual codes of lengths $90$-$96$   A classification of extremal double circulant self-dual codes of lengths up
to $88$ is known. We give a classification of extremal double circulant
self-dual codes of lengths $90,92,94$ and $96$. We also classify double
circulant self-dual codes with parameters $[90,45,14]$ and $[96,48,16]$. In
addition, we demonstrate that no double circulant self-dual $[90,45,14]$ code
has an extremal self-dual neighbor, and no double circulant self-dual
$[96,45,16]$ code has a self-dual neighbor with minimum weight at least $18$.

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The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int