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A note on rational and spline approximation

โœ Scribed by Z Ditzian


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
87 KB
Volume
58
Category
Article
ISSN
0021-9045

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Let E be a subspace of C(X) and let R(E)= gร‚h: g, h # E ; h>0]. We make a simple, yet intriguing observation: if zero is a best approximation to f from E, then zero is a best approximation to f from R(E ). We also prove that if That extends the results of P. Borwein and S. Zhou who proved it for t