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The Turán-type inequalities for complex polynomials in $$L_{0}$$-metrics. (English. Russian original) Zbl 1158.41303
Russ. Math. 52, No. 5, 88-94 (2008); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2008, No. 5, 101-108 (2008).
Summary: We obtain inequalities for measures of trigonometric polynomials of power $$(P_n (e^{i\varphi} ))$$ and general $$(T_n (t))$$ types with the help of measures and their $$m$$th derivatives.
##### MSC:
 41A17 Inequalities in approximation (Bernstein, Jackson, Nikol’skiĭ-type inequalities) 30C10 Polynomials and rational functions of one complex variable
##### Keywords:
the Turán-type inequalities; $$L_{0}$$-metrics
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##### References:
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