Exact estimates of approximation of periodic functions by linear polynomial methods of convolution type

1983 ◽  
Vol 33 (2) ◽  
pp. 115-119
Author(s):  
V. V. Shalaev
Keyword(s):  
Convolution Type ◽  
Periodic Functions ◽  
Linear Polynomial ◽  
Approximation Of Periodic Functions ◽  
Polynomial Methods

scholarly journals On multidimensional Jackson's theorem

2021 ◽  
pp. 30
Author(s):  
S.A. Pichugov
Keyword(s):  
Modulus Of Continuity ◽  
Periodic Functions ◽  
Linear Polynomial ◽  
Multiple Variables ◽  
Polynomial Methods ◽  
Methods Of Approximation

We have found the best linear polynomial methods of approximation of continuous periodic functions of multiple variables in uniform metric with concave modulus of continuity.

APPROXIMATION OF PERIODIC FUNCTIONS BY FEJÉR SUMS

1971 ◽  
Vol 5 (1) ◽  
pp. 86-96
Author(s):  
G K Lebed' ◽  
A A Avdeenko
Keyword(s):  
Periodic Functions ◽  
Approximation Of Periodic Functions

On extremal subspaces and approximation of periodic functions by splines of minimal defect

1975 ◽  
Vol 1 (2) ◽  
pp. 91-101 ◽  
Author(s):  
N. P. Korneičuk
Keyword(s):  
Periodic Functions ◽  
Minimal Defect ◽  
Approximation Of Periodic Functions

Second Jackson Inequality in a Sign-Preserving Approximation of Periodic Functions

2004 ◽  
Vol 56 (1) ◽  
pp. 153-160 ◽  
Author(s):  
M. G. Pleshakov ◽  
P. A. Popov
Keyword(s):  
Jackson Inequality ◽  
Periodic Functions ◽  
Approximation Of Periodic Functions

Generalized Smoothness and Approximation of Periodic Functions in the Spaces Lp, 1 < p < +∞

2019 ◽  
Vol 106 (3-4) ◽  
pp. 412-422
Author(s):  
K. V. Runovskii
Keyword(s):  
Periodic Functions ◽  
Approximation Of Periodic Functions
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