Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the extension of Whitney ultrajets of Beurling type   We prove a version of Whitney's extension theorem in the ultradifferentiable
Beurling setting with controlled loss of regularity. As a by-product we show
the existence of continuous linear extension operators on certain spaces of
Whitney ultrajets on arbitrary closed sets in $\mathbb R^n$.

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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th