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JOURNALS // Preprints of the Keldysh Institute of Applied Mathematics // Archive

Keldysh Institute preprints, 2016 040, 19 pp. (Mi ipmp2116)

The Steklov problem and estimates for orthogonal polynomials with $A_p(\mathbb{T})$ weights

A. I. Aptekarev, S. A. Denisov


Abstract: The presented paper is devoted to bounds of the orthogonal polynomials on the support of the measure of orthogonality. The big interest to this subject-matter is caused by famous Steklov problem and it's modern development and understanding. We consider weights on the unit circle $\mathbb{T}$ with $A_p$ characteristic close to $1$. For the corresponding orthonormal polynomials, we obtain the upper estimates on the weighted $L^p$ norm with $p\in (2,\infty]$.

Keywords: orthogonal polynomials; Steklov problem; bounds of orthogonal polynomials on the circle; Muckenhoupt weights.

UDC: 517.53+517.9



© Steklov Math. Inst. of RAS, 2024