Mathematics – Classical Analysis and ODEs
Scientific paper
2007-10-15
International Mathematics Research Notices (2008) Vol. 2008 : article ID rnn065, 38 pages
Mathematics
Classical Analysis and ODEs
24 pages, 2 figures
Scientific paper
10.1093/imrn/rnn065
In this paper we investigate the asymptotic behavior of polynomials that are orthonormal over the interior domain of an analytic Jordan curve L with respect to area measure. We prove that, inside L, these polynomials behave asymptotically like a sequence of certain integrals involving the canonical conformal map of the exterior of L onto the exterior of the unit circle and certain meromorphic kernel function defined in terms of a conformal map of the interior of L onto the unit disk. The error term in the integral representation is proven to decay geometrically and sufficiently fast, allowing us to obtain more precise asymptotic formulas for the polynomials under certain additional geometric considerations. These formulas yield, in turn, fine results on the location, limiting distribution and accumulation points of the zeros of the polynomials.
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