共 50 条
- [25] MULTIPLIERS OF FOURIER-SERIES AND THE APPROXIMATION OF FUNCTIONS BY POLYNOMIALS IN SPACES C AND L DOKLADY AKADEMII NAUK SSSR, 1989, 306 (02): : 292 - 296
- [27] APPROXIMATION OF 2 VARIABLES DIFFERENTIABLE FUNCTIONS BY PARTIAL SUMS OF THEIR FOURIER-SERIES DOPOVIDI AKADEMII NAUK UKRAINSKOI RSR SERIYA A-FIZIKO-MATEMATICHNI TA TECHNICHNI NAUKI, 1973, (02): : 126 - 127