Absolute Nörlund summability factors of power series and Fourier series

Hüseyın Bor
1991 Annales Polonici Mathematici  
Four theorems of Ahmad [1] on absolute Nörlund summability factors of power series and Fourier series are proved under weaker conditions.
doi:10.4064/ap-56-1-11-17 fatcat:7vfsnpy3kfb57k5m2znu5khavm