Abstract:
Strong asymptotics for Bergman polynomials (i.e., polynomials orthonormal with respect to the area measure on a bounded domain GG in C) and Szegő polynomials (i.e., polynomials orthonormal with respect to the arclength measure on a rectifiable Jordan curve Γ in C) have been first
derived in the early 1920's by T. Carleman, for Bergman polynomials, and by G. Szegő, for the namesake polynomials, in cases when ∂G and Γ are analytic Jordan curves.
The transition from analytic to smooth was not obvious and it took almost half a century, in the 1960's, till P. K. Suetin has been able to derive similar asymptotics for both kind of polynomials, in cases when ∂G and Γ are smooth Jordan curves.
The purpose on the talk is to report on some recent results on the strong asymptotics of Bergman and Szegő polynomials, in cases when ∂G and Γ are non-smooth Jordan curves, in particular, piecewise analytic without cusps.