Journal of Siberian Federal University. Mathematics & Physics / Chebyshev Polynomials with Zeros outside the Open Arc Segment

Full text (.pdf)
Issue
Journal of Siberian Federal University. Mathematics & Physics. 2024 17 (1)
Authors
Rybakova, Natalia N.
Contact information
Rybakova, Natalia N.: Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
Chebyshev polynomials; polynomials least deviating from zero; zero set; polynomials with real coefficients
Abstract

The problem of unitary polynomials of degree n with real coefficients least deviating from zero on an arbitrary fixed arc of a circle with a zero set outside an open segment of the same arc is considered. The description of the extremal polynomials of the solution of this problem is given and their norm depending on the degree of the polynomial and the arc length is obtained

Pages
18–26
EDN
BXZVAF
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/152466