Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Approximation of classes of convolutions of periodic functions by linear
  methods constructed on basis of Fourier-Lagrange coefficients   We calculate the least upper bounds of pointwise and uniform approximations
for classes of $2\pi$-periodic functions expressible as convolutions of an
arbitrary square summable kernel with functions, which belong to the unit ball
of the space $L_2$, by linear polynomial methods constructed on the basis of
their Fourier-Lagrange coefficients.

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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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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: math-ph
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The categories of this paper are: eess