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Notes on some estimations in rational approximation, I

✍ Scribed by G. Németh

Publisher
Springer Netherlands
Year
1988
Tongue
English
Weight
656 KB
Volume
19
Category
Article
ISSN
0031-5303

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Another Note on Polynomial vs Rational A
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✍ Boris Shekhtman 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 221 KB

Let E be a subspace of C(X) and let R(E)= gÂh: 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