Geodesic
Calderón–Zygmund theory for kernels with nondiscrete sets of singularities
Sbornik. Mathematics, Tome 77 (1994) no. 1, pp. 77-91 Cet article a éte moissonné depuis la source Math-Net.Ru

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An approach encompassing diverse locations of the singularities of convolution kernels by a single method is presented. In particular, the author introduces the notion of a so-called supersingular kernel, whose singularities lie on a set of arbitrary structure, in general, and a theorem on the continuity in $L^p(\mathbb R^N)$, $1, of the operator of convolution with it is established. Together with the theorem on convergence almost everywhere of the sequence of convolutions defining this operator, with cutoffs of the kernel defined in a special way, it is a generalization of fundamental results of Calderón–Zygmund. 
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     author = {N. M. Kasumov},
     title = {Calder\'on{\textendash}Zygmund theory for kernels with nondiscrete sets of singularities},
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     url = {http://geodesic.mathdoc.fr/item/SM_1994_77_1_a5/}
}
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N. M. Kasumov. Calderón–Zygmund theory for kernels with nondiscrete sets of singularities. Sbornik. Mathematics, Tome 77 (1994) no. 1, pp. 77-91. http://geodesic.mathdoc.fr/item/SM_1994_77_1_a5/

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