Rational approximation with sign-sensitive weight

Autor: A. R. K. Ramazanov
Rok vydání: 1996
Předmět:
Zdroj: Mathematical Notes. 60:536-543
ISSN: 1573-8876
0001-4346
DOI: 10.1007/bf02309168
Popis: For metrics of sign-sensitive weight, a generalization of the Jackson theorem and an analog of the Dolzhenko theorem on the estimate of the variation of a function in terms of its least rational deviations are obtained. In the same metric, two-sided estimates for rational deviations of the function signx are given.
Databáze: OpenAIRE