Pointwise approximation by de la Vallée-Poussin means
Wlodzimierz Lenski
págs. 131-136
Embedding relations connected with the strong approximation by Fournier series
Bogdan Szal
págs. 137-147
Best approximation of the Laplace operator on the plane by linear bounded operators
A. A. Koshelev
págs. 149-160
Orthonormal spline systems with arbitrary knots as bases in H1(0,1)
Gegham G. Gevorkyan, Anna Kamont
págs. 161-182
On the best uniform sing-approximation on a finite interval
V. P. Sklyarov
págs. 183-192
Approximation of function classes in Lorentz spaces with mixed norm
G. Akishev
págs. 193-214
The asymptotic property for rational interpolation to (X) at the Newman type nodes
Wang Zinzhe
págs. 214-221
A lower bound for the minimum deviation of the chebyshev polynomial on a compact real set
Klaus Schiefermayr
págs. 223-233
On a theorem of Yu. A. Brudnyi
A. V. Mironenko
págs. 235-239
Open questions around the spline orthoprojector
Simon Foucart
págs. 241-253
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