Approximation by weighted polynomials in Rk
نویسندگان
چکیده
منابع مشابه
Approximation by weighted polynomials
It is proven that if xQ′(x) is increasing on (0,+∞) and w(x) = exp(−Q) is the corresponding weight on [0,+∞), then every continuous function that vanishes outside the support of the extremal measure associated with w can be uniformly approximated by weighted polynomials of the form wPn. This problem was raised by V. Totik, who proved a similar result (the Borwein-Saff conjecture) for convex Q. ...
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ژورنال
عنوان ژورنال: Annales Polonici Mathematici
سال: 2005
ISSN: 0066-2216,1730-6272
DOI: 10.4064/ap85-3-7