On approximation by Riesz means concerning orthogonal series

1995 ◽  
Vol 21 (1) ◽  
pp. 23-33
Author(s):  
L. Leindler
1950 ◽  
Vol 72 (4) ◽  
pp. 792 ◽  
Author(s):  
G. Milton Wing

1971 ◽  
Vol 5 (6) ◽  
pp. 1399-1417 ◽  
Author(s):  
V A Bolgov ◽  
A V Efimov
Keyword(s):  

2017 ◽  
Vol 819 ◽  
pp. 012018
Author(s):  
Ahmad Fadly Nurullah bin Rasedee ◽  
Abdumalik A. Rakhimov ◽  
Anvarjon A. Ahmedov ◽  
Torla Bin Hj Hassan

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