Fromm, Jens \(L_1\)-approximation to zero. (English) Zbl 0327.41021 Math. Z. 151, 31-33 (1976). MSC: 41A50 41A10 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Fromm, Jens \(L_1\)-approximation to zero. (English) Zbl 0319.41029 Math. Z. 151, 31-33 (1976). MSC: 41A50 41A10 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Dahmen, W.; Görlich, E. Best approximation with exponential orders and intermediate spaces. (English) Zbl 0318.41022 Math. Z. 148, 7-21 (1976). MSC: 41A50 41A65 26A12 26D15 41A25 × Cite Format Result Cite Review PDF Full Text: DOI EuDML