Qureshi, K. On the degree of approximation of a periodic function f by almost Noerlund means. (English) Zbl 0502.42002 Tamkang J. Math. 12, 35-38 (1981). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 10 Documents MSC: 42A10 Trigonometric approximation 40B05 Multiple sequences and series Keywords:almost Noerlund means; almost Noerlund summable series; degree of approximation × Cite Format Result Cite Review PDF