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Complex Approximations, Orthogonal Polynomials and Applications Workshop
June 8, 2021 11:45–12:25, Sochi
 


Global phase portrait and large degree asymptotics for the kissing polynomials

A. Deaño

Carlos III University of Madrid

Abstract: In this talk we present recent results on orthogonal polynomials (OPs) with respect to the weight function $w(z;s)=e^{-sz}$ on $[-1,1]$, where $s\in\mathbb{C}$ is an arbitrary complex parameter. We are particularly interested in the limit zero distribution and asymptotic behavior of recurrence coefficients as $n\to\infty$. To investigate this, we determine the geometry of breaking points and breaking curves in the $s$ plane, which separate regions where different asymptotic behaviors occur.

Language: English

Website: https://us02web.zoom.us/j/8618528524?pwd=MmxGeHRWZHZnS0NLQi9jTTFTTzFrQT09

* Zoom conference ID: 861 852 8524 , password: caopa
 
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