Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A natural geometric construction underlying a class of Lax pairs   In the framework of the theory of differential coverings \cite{KV}, we
discuss a general geometric construction that serves the base for the so-called
Lax pairs containing differentiation with respect to the spectral parameter
\cite{OS}. Such kind of objects arise, for example, when studying integrability
properties of equations like the Gibbons-Tsarev one \cite{GT}.

4
The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: eess
18
The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an