Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Wahl map of one-nodal curves on K3 surfaces   We consider a general primitively polarized K3 surface $(S,H)$ of genus $g+1$
and a 1-nodal curve $\widetilde C\in |H|$. We prove that the normalization $C$
of $\widetilde C$ has surjective Wahl map provided $g=40,42$ or $\ge 44$.

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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an